Source: https://patents.google.com/patent/JP3938088B2/en
Timestamp: 2019-12-06 08:01:42
Document Index: 675330990

Matched Legal Cases: ['art 11', 'art 11', 'art 51', 'arts 51', 'art 51', 'arts 51', 'art 51', 'art 51', 'art 51', 'art 91', 'art 99', 'art 111', 'art 111', 'art 11', 'arts 115', 'art 173', 'art 132', 'arts 139', 'art, 11', 'art, 11', 'art, 11', 'art, 12', 'art 51', 'art 51', 'art 53', 'art, 91', 'art 91', 'art, 115']

JP3938088B2 - Optical communication device - Google Patents
JP3938088B2
JP3938088B2 JP2003109176A JP2003109176A JP3938088B2 JP 3938088 B2 JP3938088 B2 JP 3938088B2 JP 2003109176 A JP2003109176 A JP 2003109176A JP 2003109176 A JP2003109176 A JP 2003109176A JP 3938088 B2 JP3938088 B2 JP 3938088B2
JP2003109176A
JP2004319629A (en
美樹 工原
光昭 西江
2003-04-14 Application filed by 住友電気工業株式会社 filed Critical 住友電気工業株式会社
2003-04-14 Priority to JP2003109176A priority Critical patent/JP3938088B2/en
2004-11-11 Publication of JP2004319629A publication Critical patent/JP2004319629A/en
2007-06-27 Publication of JP3938088B2 publication Critical patent/JP3938088B2/en
The present inventionOptical communication deviceAbout.
Patent Document 1 describes an optical transceiver. In this optical transceiver, the signal terminals of the light emitting element and the light receiving element are electrically connected via the signal wiring of the flexible substrate in which the ground layer is arranged outside the insulating layer, and the signal is transmitted by connecting the ground layer to the earth layer. An electromagnetic shield surrounding the terminal connection is formed. With this optical transceiver, signal interference due to external noise can be suppressed.
Patent Document 2 describes an optical transceiver. In an optical transceiver, an optical transmission circuit board and an optical reception circuit board are housed in a single closed casing, and are attached to a light emitter and a light receiver that are respectively connected to these circuit boards. The wiring terminals are pulled out of the housing. The optical transmitter / receiver divides the housing into two open containers, and stores an optical transmitter board at the bottom of one container and an optical receiver board at the bottom of the other container. Two containers are closed together.
In Patent Document 3, a transmitter / receiver housing is divided into an optical receptacle housing and an electronic circuit board housing portion that houses an electronic circuit board. The optical receptacle housing includes a front part and a front part of the optical element module. A fixing groove for positioning in the vertical direction is provided, and the electronic circuit board housing part is provided with a support part for positioning the optical element module while restricting backward movement.
Both of these include coaxial optical transmission subassemblies and optical reception subassemblies.
JP-A-11-196055
JP-A-8-37500
JP 2002-82261 A
However, the optical communication subassemblies such as the coaxial optical transmission subassembly and the optical reception subassembly have the following problems regarding the cost reduction of the optical module, the optical communication device, and the optical transmission / reception device: (1) There are many components. (2) The parts cost for many parts increases. (3) The assembly cost for many parts increases.
Therefore, an object of the present invention is to have a structure that can streamline assembly compared to the above-described optical communication subassembly.Optical communication deviceWill be provided.
According to one aspect of the invention,An optical communication device includes: a first circuit board; an electronic element mounted on the first circuit board; a semiconductor optical element electrically connected to the electronic element; and optical transmission optically coupled to the semiconductor optical element An optical module including a medium and a housing, a flexible wiring member having one end and the other end connected to the first circuit board of the optical module, and a second circuit connected to the other end of the wiring member A substrate and another electronic element mounted on the second circuit board and connected to the electronic element via a wiring are provided. The housing has a mounting portion for mounting the semiconductor optical device, a cavity for accommodating the electronic device and the semiconductor optical device, a holding portion that leads to the cavity and holds the optical transmission medium, and an opening that leads to the cavity. The circuit board is provided in the opening. According to this optical communication device, the optical module is connected to the second circuit board via the wiring member.
In this optical module, the semiconductor optical element is provided in a housing, and the housing has an opening for accommodating a first circuit board on which the electronic element is mounted. The first circuit board is provided in the opening, and the electronic element is accommodated in the cavity.
thisIn the optical module, the optical transmission medium can include an optical fiber and a ferrule that holds the optical fiber. According to this optical module, the optical fiber is protected by the ferrule.
thisIn the optical module, the ferrule can be made of plastic. Plastic ferrules help to lower the part price.
thisIn an optical module, the optical fiber can be a multimode fiber. According to this optical module, the tolerance of the optical alignment between the semiconductor optical element and the optical fiber can be increased as compared with the case where the optical fiber is a single mode fiber.
thisThe optical module can have a base and a cover. The semiconductor optical device is mounted on the base. The optical transmission medium is supported by a base and a cover.
According to this optical module, the optical transmission medium is supported using the base and the cover, and is optically coupled to the semiconductor optical device on the base.
thisIn the optical module, the housing can include a mounting component for mounting the semiconductor optical element and the optical transmission medium, and a base and a cover for supporting the mounting component.
According to this optical module, the semiconductor optical device and the optical transmission medium are optically coupled to each other on the mounted component.
thisIn the optical module, the semiconductor optical device can be a semiconductor light receiving device. The mounted component has a reflecting surface that reflects light from the optical transmission medium. The semiconductor light receiving element receives light from the optical transmission medium via the reflecting surface.
This optical module has a structure for an optical receiving module suitable for passive alignment.
thisIn the optical module, the semiconductor optical device can be a semiconductor light emitting device. The optical transmission medium is positioned on the mounted component. The semiconductor light emitting element is optically coupled to one end of the optical transmission medium.
This optical module has a structure for an optical transmission module suitable for passive alignment.
thisIn the optical module, the opening of the housing may have a guide surface for receiving the first circuit board. According to this optical module, when one of the housing and the first circuit board is attached to the other, the guide surface of the opening guides the attachment direction.
Of the present inventionThe optical communication device includes: (a) the optical module described above; (b) a flexible wiring member having one end and the other end connected to the first circuit board of the optical module; and (c) the wiring member. A second circuit board connected to the other end; and (d) another electronic element mounted on the second circuit board and connected to the electronic element via a wiring. According to this optical module, the optical module is connected to the second circuit board via the wiring member.
In the optical communication apparatus of the present invention, the wiring component may include a flexible printed board. The first wiring board is connected to the second wiring board via a flexible printed board.
In the optical communication apparatus of the present invention, the semiconductor optical element of the optical module is a semiconductor light emitting element, the electronic element is a driving element for driving the semiconductor light emitting element, and another electronic element is provided to the driving element. A signal processing element that generates a signal. According to this optical communication device, an optical transmission device is provided. In this optical transmitter, the optical module is connected to the second circuit board via a wiring member.
In the optical communication device of the present invention, the semiconductor optical element of the optical module is a semiconductor light receiving element, the electronic element is an amplifying element for amplifying a signal from the semiconductor light receiving element, and the other electronic element is supplied from the amplifying element. A signal processing element for processing a signal. According to this optical communication device, an optical receiving device is provided. In this optical transmitter, the optical module is connected to the second circuit board via a wiring member.
The optical communication device of the present invention can further include a resin body that seals the optical module, the wiring member, the second circuit board, and another electronic element. According to this resin body, an optical module, a wiring member, a second circuit board, and another electronic element are sealed, and an apparatus in which these are integrated is provided.
In the optical communication device of the present invention, the housing may include a housing portion that receives a wiring member connected to the first wiring board received in the opening. In the optical communication apparatus of the present invention, the housing portion may be provided on the outer surface of the housing.
According to still another aspect of the present invention, an optical transceiver includes (a) a first optical communication device, (b) a second optical communication device, and (c) first and second optical communications. A housing for the device. According to this optical transmission / reception device, in the first and second optical communication devices, each optical module is connected to the second circuit board via the wiring member.
In the optical transceiver of the present invention, the housing includes a resin body that seals the first and second optical communication devices. According to this optical transmission / reception device, an optical transmission / reception device in which the optical module, the wiring member, and the second circuit board for the first and second optical communication devices are sealed with a resin body is provided. Is done.
According to still another aspect of the present invention, a method of manufacturing an optical communication device includes: (a) a frame, a plurality of first wiring boards, a plurality of second wiring boards, a first and a second wiring board. Preparing a substrate component on which a plurality of flexible wiring members for connecting the supporting portion for connecting the frame to the frame and the first and second wiring substrates are arranged, and (b) a semiconductor optical device and an electronic device And a step of mounting another electronic element on the first and second wiring boards of the substrate component, and (c) a cavity for accommodating the electronic element and the semiconductor optical element, and the first circuit connected to the cavity. A step of preparing a housing having an opening for receiving a substrate and mounting a semiconductor optical device; (d) a step of assembling the housing and the first wiring substrate; and (e) cutting a support part of the substrate component. , Housing, first and second wiring boards Forming an optical module component including a wiring member, and the first circuit board is provided in the opening.
In this method, the semiconductor optical element, the electronic element, and another electronic element are mounted on the board component, and then the first wiring board and the housing of the board component are assembled. After this assembly, the optical module component is formed by cutting the support portion of the substrate component. A plurality of optical modules can be formed in parallel.
The method of the present invention may further comprise (f) a step of sealing the optical module component with a resin. According to this invention, the housing and the optical module component are resin-sealed, and the optical communication device in which the first and second wiring boards and the wiring component are integrally formed is formed.
The knowledge of the present invention can be easily understood by considering the following detailed description with reference to the accompanying drawings shown as examples. Subsequently, embodiments of the optical module, the optical communication device, the optical transmission / reception device, and the method for manufacturing the optical communication device of the present invention will be described with reference to the accompanying drawings. Where possible, the same parts are denoted by the same reference numerals.
FIG. 1 is a diagram illustrating components of an optical module according to the first embodiment. FIG. 2 is a drawing showing this optical module. 3A is a cross-sectional view taken along the line II shown in FIG. 2, and FIG. 3B is taken along the line II-II shown in FIG. FIG. 3C is a cross-sectional view taken along the line III-III shown in FIG.
1 and 2, the optical module 1 includes a first circuit board 3, an electronic element 5, a semiconductor optical element 7, an optical transmission medium 9, and a housing 11. The electronic element 5 is mounted on the first circuit board 3. The semiconductor optical device 7 is electrically connected to the electronic component 5. The optical transmission medium 9 is optically coupled to the semiconductor optical device 7. The housing 11 includes a mounting portion 11a, a cavity 11b, support portions 11c and 11d, and an opening portion 11e. The mounting part 11a mounts a semiconductor optical device. The cavity 11 b accommodates the electronic element 5 and the semiconductor optical element 7. The support portions 11 c and 11 d communicate with the cavity 11 b and hold the optical transmission medium 9. The opening 11e communicates with the cavity 11b. The first circuit board 3 is provided in the opening 11e.
In this optical module 1, the semiconductor optical element 7 is provided in a housing 11, and the housing 11 has an opening 11 e that accommodates the first circuit board 3 on which the electronic element 5 is mounted. The first circuit board 3 is provided in the opening 11e, and the electronic element 5 is accommodated in the cavity 11b.
In the optical module 1, the housing 11 includes a base 13 on which the semiconductor optical element 7 and the optical transmission medium 9 are mounted, and a cover 15. According to this optical module 1, the base 13 and the cover 15 hold the optical transmission medium 9, whereby the semiconductor optical element 7 and the optical transmission medium 9 mounted on the mounting portion 11a are optically coupled to each other. The
In the optical module 1, the optical transmission medium 9 can include an optical fiber 17 and a ferrule 20. The ferrule 20 holds the optical fiber 17. According to this optical module 1, the optical fiber 17 is protected by the ferrule 20. Further, according to the optical module 1, the base 13 and the cover 15 hold the ferrule 15, whereby the semiconductor optical device 7 is optically coupled to the optical fiber 17. In the present embodiment, the support portion 11 c has two side surfaces 19 a and 19 b for holding the optical transmission medium 9. The support portion 11d has two side surfaces 21a and 21b for holding the optical transmission medium 9.
In the optical module 1, the opening 11 e of the housing 11 may have guide surfaces 22 a to 22 d for receiving the first circuit board 3. According to the optical module 1, when one of the housing 11 and the first circuit board 3 is attached to the other, the guide surfaces 22a to 22d of the opening 11e guide the attachment direction. For example, the first circuit board 3 has side surfaces 3a to 3d. The first circuit board 3 is inserted into the opening 11e of the housing 11 along the guide surfaces 22a to 22d of the opening 11e. After the insertion is completed, the side surfaces 3a to 3d of the first circuit board 3 extend along the guide surfaces 22a to 22d.
Referring to FIGS. 3A and 3B, in the optical module 1, the electronic element 5, the semiconductor optical element 7, and the optical transmission medium 9 are arranged in the direction of a predetermined axis. Further, in the housing 11, the support portion 11c, the mounting portion 11a, and the opening portion 11e are arranged in the direction of a predetermined axis. The support portion 11c of the housing 11 includes a positioning surface 19c in addition to the support surfaces 19a and 19b. The semiconductor optical device 7 is positioned on the mounting portion 11a of the housing 11, and the first circuit board 3 is located in the opening 11e. One end 9a of the optical transmission medium 9 is abutted against the positioning surface 19c. The optical transmission medium 9 is optically coupled to the semiconductor optical device 3. The semiconductor optical device 3 is electrically connected to the electronic device 5.
In the optical module 1, the semiconductor optical device 7 is connected to the electronic device 5 via a connecting member such as a bonding wire. The electronic element 5 is connected to the conductive pattern on the first circuit board 3 via a connecting member such as a bonding wire.
In the optical module 1, the electronic element 5, the semiconductor optical element 7, and the optical transmission medium 9 are arranged along a predetermined reference plane. Each of the guide surfaces 22a to 22d of the opening 11e is provided along another reference surface that intersects the reference surface. As shown in FIG. 3 (C), the side surfaces 19a and 19b and / or the side surfaces 21a and 21b of the support portions 11c and 11d of the base 13 and the cover 15 hold the optical transmission medium 9, thereby allowing optical transmission. Medium 9 is optically coupled to semiconductor optical device 7.
In a preferred embodiment, in the optical module 1, the semiconductor optical device 7 can be a semiconductor light emitting device. The optical transmission medium 9 is positioned on the base 13. The semiconductor light emitting element is optically coupled to one end 9 a of the optical transmission medium 9. The optical module 41 has a structure for an optical transmission module suitable for passive alignment.
Referring to FIGS. 1 and 2 again, the optical communication device 23 includes the optical module 1, the wiring member 25, the second circuit board 27, and another electronic element 29. The wiring member 25 has flexibility. The wiring component 25 has one end 25a and the other end 25b. One end 25 a is connected to the first circuit board 3 of the optical module 1. The other end 25 b is connected to the second circuit board 27. Another electronic element 29 is mounted on the second circuit board 29. Another electronic element 29 is electrically connected to the electronic element 5 via the wiring member 25. According to this optical communication device 23, the optical module 1 is connected to the second circuit board 27 via the wiring member 25 having flexibility.
The optical module 1 can have a base 13 and a cover 15. On the base 13, the semiconductor optical device 7 is mounted. The optical transmission medium 9 is located between the base 13 and the cover 15 and is supported by the base 13 and the cover 15. With this support, the optical transmission medium 9 is optically coupled to the semiconductor optical device 5 on the base 13.
The wiring member 25 and the second circuit board 27 are each positioned in a housing for the optical communication device 23. In the housing, the wiring member 25 allows a slight relative displacement between the optical module 1 and the second circuit board 27.
In the optical communication device 23, the wiring member 25 is composed of one or a plurality of conductive wires and a flexible insulating member that covers the conductive wires. Alternatively, the wiring member 25 may include a flexible printed board. The first wiring board 3 is connected to the second wiring board 25 via a flexible printed board.
In the optical communication device 23 of the preferred embodiment, the semiconductor optical element 7 of the optical module 1 can be a semiconductor light emitting element. The electronic element 5 can be a driving element for driving the semiconductor light emitting element. Another electronic element 27 can be a signal processing element that generates a signal to be provided to the drive element. According to this optical communication apparatus, an optical transmission apparatus that generates an optical signal is provided. Since the housing 11 includes a mounting portion 11a, support portions 11c and 11d, and an opening portion 11e, the optical module 1 has a structure for an optical transmission module suitable for passive alignment.
The semiconductor light emitting device can be, for example, a semiconductor laser (for example, a Fabry-Perot semiconductor laser or a DFB semiconductor laser), a semiconductor optical amplification device, a semiconductor modulation device, and a semiconductor optical integrated device. The semiconductor optical integrated device includes a light emitting element portion and a modulation element portion. The signal processing element includes, for example, a demultiplexer circuit. The electronic element 5 is, for example, a laser driver that drives a semiconductor laser.
On the main surface 27a of the second circuit board 27, an electronic element 31 such as a passive element is provided in addition to the electronic element 29 such as an active element. In addition to the electronic element 5 such as an active element, the first circuit board 3 can be mounted with another electronic element such as a passive element on the main surface.
In this optical transmitter, the optical module 1 is connected to the second circuit board 27 via the wiring member 25. The optical communication device 23 includes an additional second circuit board 27 in addition to the first circuit board 3. According to the additional circuit board 27, the optical communication device 23 can mount a larger number of electronic elements. Since the additional second circuit board 2 is provided outside the optical module, the structure of the optical module can be simplified.
In a preferred embodiment, ferrule 20 can be made of, for example, ceramic or plastic. Plastic ferrules help to lower the part price. In the optical module 1, the optical fiber 17 can be a single mode fiber or a multimode fiber. According to the multimode fiber, the tolerance of the optical alignment between the semiconductor optical element and the optical fiber or between the external optical fiber and the optical fiber of the optical module is compared with the case where the optical fiber is a single mode fiber. The tolerance of optical alignment can be increased.
In the optical communication device 23, the housing 11 can include a housing portion 11f that receives the wiring component 25 connected to the first wiring board 3 received in the opening portion 11e. The accommodating portion 11f can include a groove or a hole extending from the outer surface of the housing 11 to the opening portion 11e. According to the housing part 11 f, the wiring component 25 connected to the first wiring board 3 can be prevented from protruding from the outer surface of the housing 11. Further, in the optical communication device 23, the accommodating portion 11f can be provided on the outer surface 11g of the housing 11.
FIG. 4 shows a modification of the optical module 1. Referring to FIG. 4, the optical module 33 includes a first circuit board 4, an electronic element 5, a semiconductor light emitting element 8, an optical transmission medium 9, and a housing 12.
The optical communication device 33 can include a light receiving element 10 that monitors the semiconductor light emitting element 8. The light receiving element 10 is provided between the semiconductor light emitting element 8 and the electronic element 5. The housing 12 has a base 14 and a cover 16. The base 14 includes conductive patterns 35 a and 35 b for the semiconductor light emitting element 8 and the light receiving element 10. The base 14 has the light receiving element 10 mounted thereon. Since the light receiving element 10 and the semiconductor light emitting element 8 are mounted on the base 14, the light receiving element 10 and the semiconductor light emitting element 8 can be optically aligned on the base 14. The semiconductor light emitting element 8 is electrically connected to the electronic element 5 through a conductive pattern 37 a provided on the first circuit board 4 and a conductive pattern 35 a provided on the base 42. The light receiving element 10 is electrically connected to a conductive pattern 37 b provided on the first circuit board 4 and a conductive pattern 35 b provided on the base 42. The base material is, for example, a resin such as a liquid crystal polymer.
In addition, the housing 12 can include a guide protrusion 12 a that protects the optical transmission medium 9. The guide protrusion 12a extends in the direction of a predetermined axis and guides the ferrule. This guide protrusion 12a serves to facilitate positioning of the ferrule.
FIG. 5 is a diagram showing components of the optical module according to the second embodiment. FIG. 6 is a drawing showing this optical module. 7A is a cross-sectional view taken along the line VI-VI shown in FIG. 6, and FIG. 7B is taken along the line V-V shown in FIG. FIG. 7C is a drawing showing the mounting portion.
Referring to FIGS. 5 and 6, the optical module 41 includes a first circuit board 43, an electronic element 45, a semiconductor optical element 47, an optical transmission medium 49, and a housing 51. The electronic element 45 is mounted on the first circuit board 43. The semiconductor optical device 47 is electrically connected to the electronic component 45. The optical transmission medium 49 is optically coupled to the semiconductor optical device 47. The housing 51 includes a mounting part 51a, a cavity 51b, support parts 51c and 51d, and an opening part 51e. The mounting portion 51a mounts the semiconductor optical device 47. The cavity 51 b accommodates the electronic element 45 and the semiconductor optical element 47. The support parts 51 c and 51 d communicate with the cavity 51 b and hold the optical transmission medium 49. The opening 51e communicates with the cavity 51b. The first circuit board 43 is provided in the opening 51e.
In this optical module 41, the semiconductor optical device 47 is provided in the housing 51, and the housing 51 has an opening 51 e that houses the first circuit board 43 on which the electronic device 45 is mounted. The first circuit board 43 is provided in the opening 51e, and the electronic element 45 is accommodated in the cavity 51b.
In the optical module 41, the housing 51 includes a base 53 and a cover 55 on which the semiconductor optical element 47 and the optical transmission medium 49 are mounted. According to this optical module 41, the base 53 and the cover 55 hold the optical transmission medium 49, whereby the semiconductor optical element 47 and the optical transmission medium 49 mounted on the mounting portion 51a are optically coupled to each other. The
In the optical module 41, the optical transmission medium 49 can include an optical fiber 57 and a ferrule 59. According to the optical module 41, the base 53 and the cover 55 hold the ferrule 55, whereby the semiconductor optical device 47 is optically coupled to the optical fiber 57. The optical fiber 57 has a first portion 57a and a second portion 57b. The ferrule 59 holds the second portion 57 b of the optical fiber 57. The support portions 51c and 51d of the base 53 and the cover 55 have side surfaces 59a and 59b and / or side surfaces 61a and 61b, and the side surfaces 59a, 59b, 61a and 61b hold the ferrule 59 of the optical transmission medium 49. . As a result, the semiconductor optical device 47 is optically coupled to the optical transmission medium 49. In the present embodiment, the support portion 51 c has a support groove 59 including two side surfaces 59 a and 59 b for supporting the optical transmission medium 49. The support portion 51 d has a support groove 61 including two side surfaces 61 a and 61 b for supporting the optical transmission medium 49. Further, the support portion 51 c has a support groove 60 including two side surfaces 60 a and 60 b for supporting the first portion 57 a of the optical fiber 57. The support portion 51c has an abutment surface (reference number 60c shown in FIG. 7C). One end 57 c of the optical fiber 57 is abutted against the abutting surface 60 c and positioned on the base 53. The optical fiber 57 of the optical transmission medium 49 is optically coupled to the semiconductor optical device 47.
In the optical module 41, the opening 51 e of the housing 51 may have guide surfaces 62 a to 62 d for receiving the first circuit board 43. According to the optical module 41, when one of the housing 51 and the first circuit board 43 is attached to the other, the guide surfaces 62a to 62d of the opening 51e guide the attachment direction. The opening 51 e is adjacent to the mounting portion 51 a of the housing 51. According to the optical module 41, the distance between the electronic element 45 and the semiconductor optical element 47 can be shortened. The semiconductor optical device 43 is electrically connected to the electronic device 45.
Referring to FIGS. 7A and 7B, in the optical module 41, the electronic element 45, the semiconductor optical element 47, and the optical transmission medium 49 are arranged in a predetermined axis direction. Moreover, in the housing 51, the support part 51c, the mounting part 51a, and the opening part 51e are arranged in the direction of the predetermined axis. A semiconductor optical device 57 is positioned on the mounting portion 51 a of the housing 51. The first circuit board 43 is located in the opening 51e.
In the optical module 41, the electronic element 45, the semiconductor optical element 47, and the optical transmission medium 49 are arranged along the reference plane. Each of the guide surfaces 62a to 62d of the opening 51e is provided along another reference surface that intersects the reference surface.
In the optical module 41, the semiconductor optical device 47 is connected to the electronic device 45 via a connecting member such as a bonding wire. The electronic element 45 is connected to the conductive pattern on the first circuit board 43 through a connecting member such as a bonding wire.
In one embodiment, in the optical module 41, the semiconductor optical device 47 can be a semiconductor light receiving device. The optical transmission medium 49 is positioned on the base 53. The semiconductor light receiving element is optically coupled to one end 57 c of the optical fiber 57.
FIG. 7C is a diagram showing optical coupling between the optical fiber 57 and the semiconductor optical device 47 (for example, a semiconductor light receiving device). The base 53 has a light passage groove 64 that enables optical coupling between the optical fiber 57 and the semiconductor optical element 47 (for example, a semiconductor light receiving element). The base 53 has a reflecting surface 64 a provided at one end of the light passage groove 64. The light LA from the one end 57c of the fiber 57 passes through the light passage groove 64 and travels toward the reflecting surface 64a. The reflecting surface 64a reflects the light from the optical fiber 57 toward the semiconductor optical device 47, and generates reflected light LB. The incident surface 47a receives the reflected light LB. The reflected light LB enters the semiconductor optical element 47 (for example, a semiconductor light receiving element) via the monolithic lens 47b on the incident surface 47a and reaches the light detection region 47c. This optical module 41 has a structure for an optical receiving module suitable for passive alignment.
Referring to FIGS. 5 and 6 again, the optical communication device 63 includes the optical module 41, the wiring member 25, the second circuit board 27, and another electronic element 29. According to this optical communication device 43, the optical module 41 is connected to the second circuit board 27 via the wiring member 25 having flexibility.
The optical module 41 can have a base 53 and a cover 55. A semiconductor optical device 47 is mounted on the base 53. The optical transmission medium 49 is located between the base 53 and the cover 55 and is supported by the base 53 and the cover 55. With this support, the optical transmission medium 49 is optically coupled to the semiconductor optical element 45 on the base 53.
In the optical communication device 63 of the preferred embodiment, the semiconductor optical element 47 of the optical module 4 can be a semiconductor light receiving element. The electronic element 5 can be a preamplifier element including a preamplifier for amplifying a signal from the semiconductor light receiving element. Another electronic element 27 may be a main amplifier element that processes a signal from the preamplifier element. According to the optical communication device 63, an optical receiving device that receives an optical signal is provided. The semiconductor light receiving element can be, for example, a pin type photodiode and an avalanche photodiode.
The housing 51 includes a mounting portion 51a, support portions 51c and 51d, and an opening 51e. The semiconductor light receiving element receives light from the optical transmission medium 49 via the reflecting surface 64a. The optical module 41 has a structure for an optical transmission module suitable for passive alignment.
In this optical transmitter, the optical module 41 is connected to the second circuit board 27 via the wiring component 25. The optical communication device 63 includes an additional second circuit board 27 in addition to the first circuit board 43. According to the additional circuit board 27, the optical communication device 63 can mount a larger number of electronic elements. Since the additional second circuit board 27 is provided outside the optical module, the structure of the optical module 41 such as an optical receiving module can be simplified.
In a preferred embodiment, the ferrule 59 can be made of ceramic or plastic, similar to the module of the first embodiment. In the optical module 41, the optical fiber 57 can be a single mode fiber or a multimode fiber. According to the multimode fiber, the tolerance of optical alignment between the semiconductor light receiving element and the optical fiber can be increased as compared with the case where the optical fiber is a single mode fiber.
In the optical communication device 63, the housing 51 can include a housing portion 51f that receives the wiring member 25 connected to the first wiring board 43 received in the opening 51e. The accommodating portion 51f can include a groove or a hole extending from the outer surface of the housing 51 to the opening 51e. According to the housing portion 51 f, the wiring member 25 connected to the first wiring substrate 43 can be prevented from protruding from the outer surface of the housing 51. In the optical communication device 63, the accommodating portion 51 f can be provided on the outer side surface 51 g of the housing 51.
FIG. 8 is a diagram showing components of the optical module according to the second embodiment. FIG. 9 is a drawing showing this optical module.
Referring to FIGS. 8 and 9, the optical module 81 includes a first circuit board 3, an electronic element 5, a semiconductor optical element 7, an optical transmission medium 49, and a housing 91. The housing 91 includes a receiving portion 91a, a cavity 91b, a support portion 91c, and an opening 91e. For example, the receiving portion 91a and the opening portion 91e can be arranged along a predetermined axis. The receiving portion 91a and the cavity 91b can be arranged along a predetermined axis. The cavity 91b and the support part 91c can be arranged along a predetermined axis. The cavity 91 b accommodates the electronic element 5 and the semiconductor optical element 7. The support portion 51 c communicates with the cavity 51 b and holds the optical transmission medium 9. The opening 91e communicates with the cavity 91b. The first circuit board 3 is provided in the opening 91e.
In the optical module 81, the housing 91 can have a base 93 and a cover 95. The housing 91 further includes a mounting member 97. The receiving portion 91 a has a recess for receiving the mounting member 97. The receiving portion 91 a has a positioning surface 91 d for positioning the mounting member 97 in the housing 91. The positioning surface 91d extends along a plane that intersects a predetermined axis. In the housing 91, the receiving portion 91a and the opening 91e are positioned with respect to each other. The first circuit board 3 is positioned by the opening 91e. Therefore, the mounting member 97 and the first circuit board 3 are positioned with respect to each other via the housing 91. On the mounting member 97, the semiconductor optical device 47 and the optical transmission medium 49 are optically coupled to each other. The electronic element 5 is mounted on the first circuit board 3. The semiconductor optical device 7 is electrically connected to the electronic component 5.
The mounting member 97 includes a ferrule support 99 and an optical fiber support 101 arranged along a predetermined axis. The ferrule support part 99 has a support groove including two side surfaces 99 a and 99 b for supporting the ferrule 59. The optical fiber support portion 101 has a support groove including two side surfaces 101 a and 101 b for supporting the optical fiber 57. The optical fiber support 101 has an abutment surface 103 extending along a reference plane that intersects a predetermined axis. One end 57 c of the optical fiber 57 is abutted against the abutting surface 103 and positioned on the mounting member 97. On the mounting member 97, the optical fiber 57 of the optical transmission medium 49 is optically coupled to the semiconductor optical device 7.
10, 11 (A) to 11 (C), FIG. 12, FIG. 13 (A) to FIG. 13 (C), FIG. 14, FIG. 15 (A) to FIG. 15 (C), and FIG. It is drawing which shows the process of manufacturing an optical communication apparatus, respectively.
As shown in FIG. 10, a board component 111 is prepared. Referring to FIGS. 10 and 11A, the board component 111 includes a frame 111a, a first wiring board 3, a wiring member 25, a second wiring board 27, and a support portion 111b. The wiring member 25 connects the first and second wiring boards 3 and 25. In a preferred embodiment, the second wiring board 27 can include a lead terminal 28 (see FIG. 11A) on one side thereof. Alternatively, the second wiring board 27 can include a card edge. The wiring component 25 and the first and second wiring boards 3 and 27 constitute a plurality of basic units 113. In the board component 111, the basic units 113 are arranged in an array. The support part 111b connects at least one of the first and second wiring boards 3 and 27 to the frame 111a. For example, the support part 111b connects the adjacent second wiring boards 27 to each other.
As shown in FIG. 11B, an electronic element 5 and other electronic elements 29 and 31 are prepared. Next, as shown in FIG. 11C, the electronic element 5 and the other electronic elements 29 and 31 are mounted on the first and second wiring boards 3 and 27 of the board component 111. Referring to FIG. 12, the electronic element 5 and other electronic elements 29 and 31 are mounted on several basic units 113. In a preferred embodiment, the electronic element 5 and the other electronic elements 29, 31 can be mounted using a multi-handler. After the electronic element 5 and the other electronic elements 29 and 31 are mounted on the circuit boards 3 and 27, the conductive pattern on the circuit board 3 and 27 and the electronic elements 5 and the other electronic elements 29 are connected via connection members such as bonding wires. , 31 are connected.
Subsequently, a housing 11 having a cavity 11b for accommodating the electronic element 5 and the semiconductor optical element 7 and an opening 11e that communicates with the cavity 11b and receives the first circuit board 3 is prepared. The housing 11 includes a base 13 and a cover 15 as described in the drawings. Then, the housing 11 and the first wiring board 3 are assembled.
The assembly of the housing 11 and the first wiring board 3 will be described.
For example, as shown in FIG. 13 (A), the semiconductor optical element 7 and the optical transmission medium 9 are mounted on the base 13 of the housing to form the base component 115. In the base component 115, the semiconductor optical device 7 and the optical transmission medium 9 are aligned via the base 13.
Next, as shown in FIG. 13B, the first circuit board 3 is inserted into the opening 11 e of the base 13 of the base component 115. In the preferred embodiment, this insertion can be done using a multi-handler. FIG. 14 shows the substrate component 111 during this assembly. One end of the optical transmission medium 9 of the base component 115 is located on the frame 111a. The frame 111 a supports one end of the optical transmission medium 9. The housing part 11 f of the base 13 receives the wiring component 25 connected to the first wiring board 3. By this reception, it is possible to prevent the housing 11 from protruding from the outer surface.
Next, as shown in FIG. 13C, after being inserted into the opening 11e of the first circuit board 3, the conductive patterns on the base 13 and the first circuit board 3 are connected via a connecting member such as a bonding wire. The electronic element 5 and the semiconductor optical element 7 are connected.
Then, as shown in FIG. 15A, the cover 15 of the housing 11 is prepared. As shown in FIG. 15B, when the cover 15 is mounted on the base 13, the cavity 11b of the housing 11 is formed. FIG. 16 shows the board component 111 being assembled. The cover 15 is mounted on the base parts 115 arranged in an array. In the preferred embodiment, this mounting can be done using a multi-handler. When this process is completed, the optical module component 117 is formed. The optical module components 117 are arranged in an array in the frame 111.
Next, the support portion 111 b of the frame 111 is cut to separate the optical module component 117 from the frame 111. The optical module component 117 has, for example, the structure shown in FIG.
In this method, after mounting a semiconductor optical element, an electronic element, and another electronic element on a board component, the first wiring board and housing of the wiring component are assembled. After this assembly, the optical module component 117 is formed by cutting the support portion of the substrate component.
As shown in FIG. 15C, the optical module component 117 can be sealed with resin. After this sealing, an optical communication device 119 is obtained. The optical communication device 119 can further include a resin body 121. The resin body 121 seals the optical module 123, the wiring member 25, the second circuit board 27, and the other electronic elements 29 and 31. According to this manufacturing method, the housing 11 and the optical module component 117 are sealed with resin, and the optical communication device 119 in which the first and second wiring boards 3 and 27 and the wiring component 25 are integrally formed is formed.
FIG. 17A shows a basic unit of substrate parts for the optical communication apparatus. FIG. 17B is a diagram illustrating a modification of the optical communication device. Referring to FIG. 17A, a basic unit 131 of board components includes first to third circuit boards 133, 135, and 137, and first and second wiring members 139 and 141. The first wiring component 139 connects the first circuit board 133 and the third circuit board 135. The second wiring member 141 connects the second circuit board 135 and the third circuit board 137. The first and second wiring members 139 and 141 have flexibility. An electronic component 140 is mounted on the main surface 133 a of the first circuit board 133. Electronic components 143, 145, 147, and 149 are mounted on the main surface 135 a of the second circuit board 135. An electronic component 151 is mounted on the main surface 137 a of the third circuit board 137. The electronic component 140 is electrically connected to the electronic component 143 through the wiring member 139. The electronic component 151 is electrically connected to the electronic component 147 through the wiring member 141. A lead terminal 153 is disposed on one edge of the second circuit board 135. The lead terminal 153 is electrically connected to the electronic components 143 and 147. In a preferred embodiment, the first and second wiring members 139 and 141 can be flexible printed boards.
Referring to FIG. 17B, an optical communication device 153 and an optical module 152 are shown. The optical communication device 153 includes an optical module 152. The optical module 152 includes a base 155 and a cover 157. On the main surface 155a of the base 155, the first and second semiconductor optical elements 163 and 165 are mounted. The base 155 includes an opening 155b and an opening 155c. The first circuit board 133 is inserted into the opening 155b. A third circuit board 137 is inserted into the opening 155c. The optical module 152 includes optical transmission media 161a and 161b. The optical transmission media 161 a and 161 b are positioned on the base 155. Further, it is held by a base 155 and a cover 157. The optical transmission medium 161 a is optically coupled to the semiconductor optical element 163. The optical transmission medium 161b is optically coupled to the semiconductor optical element 165. A cover 157 is mounted on the base 155 to form a cavity 159a. The cavity 159 a can receive the semiconductor optical elements 163 and 165 and the electronic elements 140 and 151. .
The optical communication device 153 includes a resin body 167. The resin body 167 seals the optical module 152, the wiring members 139 and 141, and the second circuit board 135. Optical transmission media 161 a and 161 b protrude from one side surface 167 a of the resin body 167. The lead terminals 150 are arranged on the other side surface 167 b of the resin body 167.
In one embodiment, the first semiconductor optical device 163 can be a semiconductor light emitting device, and the second semiconductor optical device 165 can be a semiconductor light receiving device. In another embodiment, the first semiconductor optical device 163 and the second semiconductor optical device 165 can be semiconductor light receiving devices. In yet another embodiment, the first semiconductor optical device 163 and the second semiconductor optical device 165 can be semiconductor light emitting devices.
FIG. 18A shows a basic unit of substrate parts for the optical communication apparatus. FIG. 18B is a diagram illustrating a further modification of the optical communication device. Referring to FIG. 18A, a basic unit 132 of board components includes first to third circuit boards 133, 135, 138, and first and second wiring members 139, 141. The basic unit 132 includes a third circuit board 138 instead of the third circuit board 137 shown in FIG. The third circuit board 138 is connected to the lead terminal 169a of the optical communication subassembly 169 having a coaxial structure. The semiconductor optical device 151 is mounted on the stem 169 b of the optical communication subassembly 169. A lens holding cap 169c is mounted on the stem 169b. The stem 169b is mounted with a first sleeve 169d. A second sleeve 169e is attached on the first sleeve 169d. The second sleeve 169e holds a ferrule 169f. An optical fiber 169g is provided in the ferrule 169f. The optical fiber 169g is optically coupled to the semiconductor optical device 151.
Referring to FIG. 18B, the optical communication device 154 includes a resin body 171. The resin body 171 seals the optical communication subassembly 169, the optical module 173, the wiring members 139 and 141, and the second circuit board 135. An optical transmission medium 161 a and a ferrule 169 f protrude from one side surface 171 a of the resin body 171. Further, lead terminals 150 are arranged on the other side surface 171 b of the resin body 171.
In a preferred embodiment, the semiconductor optical device 151 can be a semiconductor light emitting device. The optical communication subassembly 169 is suitable for releasing heat from the semiconductor light emitting device.
The optical communication devices 153 and 154 are manufactured in the same manner as the method for manufacturing the optical communication device described in the sixth embodiment. A method of manufacturing the optical communication device will be schematically described with reference to FIGS.
As shown in FIG. 19, a substrate component 130 is prepared. The board component 130 includes basic units 132 arranged in an array, a frame 132a, and a support portion 132b that connects the basic unit 132 to the frame 132a. The basic unit 132 includes first to third circuit boards 133, 135, and 137, and first and second wiring components 139 and 141. The first wiring member 139 connects the first circuit board 133 and the second circuit board 135. The second wiring member 141 connects the second circuit board 137 and the second circuit board 135. The first and second wiring members 139 and 141 have flexibility. The board component 130 is placed on the tray 134.
As shown in FIG. 20, the electronic elements 140 and 151 and the other electronic elements 143 and 145 are mounted on the first and second wiring boards 133, 135, and 137 of the board component 132.
As shown in FIG. 21, there are cavities 159a for accommodating the electronic elements 140 and 151 and the semiconductor optical elements 163 and 165, and openings 155b and 155c that lead to the cavity 159a and receive the first circuit boards 133 and 137, respectively. A housing 159 having semiconductor optical elements 163 and 165 is prepared. Specifically, the semiconductor optical elements 163 and 165 and the optical transmission media 161a and 161b are mounted on the base 155 to prepare the base component 173.
Further, the housing 159 and the first wiring boards 133 and 137 are assembled. Specifically, the base component 173 and the first wiring boards 133 and 137 are assembled. Next, a cover 157 is mounted on the base part 173.
As shown in FIG. 22, the support part 132b of the board component 130 is cut along the broken line CUT, and the light including the housing 159, the first to third wiring boards 133, 135, 137 and the wiring parts 139, 141 is obtained. A module component 175 is formed.
Next, a step of sealing the optical module component 175 with a resin can be further provided. In a preferred embodiment, the base and cover can be molded from a resin such as, for example, a liquid crystal polymer.
While the principles of the invention have been illustrated and described in the preferred embodiments, it will be appreciated by those skilled in the art that the invention can be modified in arrangement and detail without departing from such principles. The present invention is not limited to the specific configuration disclosed in the present embodiment. For example, the structure of the optical module and the optical communication device is not limited to the specific structure described in the present embodiment. We therefore claim all modifications and changes that come within the scope and spirit of the following claims.
As described above, an optical module, an optical communication device, and an optical transmission / reception device having a structure that can rationalize assembly are provided.
FIG. 1 is a drawing showing components of an optical module according to a first embodiment.
FIG. 2 is a drawing showing this optical module.
3A is a cross-sectional view taken along line I-I shown in FIG. 2, and FIG. 3B is a cross-sectional view taken along line II-II shown in FIG. FIG. 3C is a cross-sectional view taken along the line III-III shown in FIG. 2.
FIG. 4 is a drawing showing a modification of the optical module.
FIG. 5 is a drawing showing components of an optical module according to a second embodiment.
6 is a diagram illustrating the optical module illustrated in FIG. 5. FIG.
7A is a cross-sectional view taken along line VI-VI shown in FIG. 6, and FIG. 7B is a cross-sectional view taken along line V-V shown in FIG. It is sectional drawing taken along, and FIG.7 (C) is drawing which shows a mounting part.
FIG. 8 is a diagram showing components of an optical module according to a second embodiment.
FIG. 9 is a diagram illustrating the optical module illustrated in FIG. 8;
FIG. 10 is a drawing showing a process of manufacturing an optical communication device.
FIG. 11A to FIG. 11C are drawings showing a process for manufacturing an optical communication device.
FIG. 12 is a drawing showing a process of manufacturing an optical communication device.
FIG. 13A to FIG. 13C are drawings showing a process for manufacturing an optical communication device.
FIG. 14 is a drawing showing a process of manufacturing an optical communication device.
FIG. 15A to FIG. 15C are drawings showing a process for manufacturing an optical communication device.
FIG. 16 is a drawing showing a process of manufacturing an optical communication device.
FIG. 17A is a drawing showing a basic unit of substrate parts for the optical communication device. FIG. 17B is a diagram illustrating a modification of the optical communication device.
FIG. 18A is a diagram showing a basic unit of substrate parts for the optical communication device. FIG. 18B is a diagram illustrating a further modification of the optical communication device.
FIG. 19 is a drawing showing a process of manufacturing an optical communication device.
FIG. 20 is a drawing showing a process of manufacturing an optical communication device.
FIG. 21 is a drawing showing a process of manufacturing an optical communication device.
FIG. 22 is a drawing showing a process of manufacturing an optical communication device.
DESCRIPTION OF SYMBOLS 1 ... Optical module, 3 ... 1st circuit board, 5 ... Electronic element, 7 ... Semiconductor optical element, 9 ... Optical transmission medium, 10 ... Light receiving element, 11 ... Housing, 11a ... Mounting part, 11b ... Cavity, 11c, 11d: Supporting part, 11e ... Opening part, 11f ... Housing part, 12 ... Housing, 12a ... Guide projection, 13, 14 ... Base, 15, 16 ... Cover, 17 ... Optical fiber, 19a, 19b ... Side, 20 ... Ferrule 21a, 21b ... side surfaces, 22a-22d ... guide surfaces, 23 ... optical communication device, 25 ... wiring components, 27 ... second circuit board, 29 ... another electronic element, 41 ... optical module, 43 ... first Circuit board 45 ... Electronic element 47 ... Semiconductor optical element 49 ... Optical transmission medium 51 ... Housing 51a ... Mounting part 51b ... Cavity 51c, 51d ... Supporting part 51e ... Opening part 53 Base, 55 ... Cover, 57 ... Optical fiber, 59 ... Ferrule, 62a to 62d ... Guide surface, 63 ... Optical communication device, 81 ... Optical module, 91 ... Housing, 91a ... Receiving part, 91b ... Cavity, 91c ... Supporting part 91e ... opening, 111 ... substrate component, 111a ... frame, 111b ... support part, 115 ... base component, 117 ... optical communication device component, 119 ... optical communication device, 121 ... resin body, 123 ... optical module, 131, 132: Basic unit, 133, 135, 137 ... First to third circuit boards, 139, 141 ... First and second wiring components, 143, 145, 147, 149 ... Electronic components, 151 ... Electronic components, 152 ... optical module, 153, 154 ... optical communication device, 157 ... base, 155 ... cover, 161a, 161b ... optical transmission medium, 16 , 165 ... semiconductor optical device, 167 ... resin body, 169 ... optical communications subassembly 154 ... 171 ... resin body, 173 ... optical module
A first circuit board, an electronic element mounted on the first circuit board, a semiconductor optical element electrically connected to the electronic element, an optical transmission medium optically coupled to the semiconductor optical element, and An optical module including a housing ;
A flexible wiring member having one end and the other end connected to the first circuit board of the optical module;
A second circuit board connected to the other end of the wiring member;
Another electronic element mounted on the second circuit board and connected to the electronic element via the wiring member ;
The housing includes a mounting portion for mounting the semiconductor optical device, a cavity for storing the electronic device and the semiconductor optical device, a holding portion that communicates with the cavity and holds the optical transmission medium, and an opening that communicates with the cavity. Have
The first circuit board that are provided in the opening, the optical communication apparatus.
The optical communication device according to claim 1 , wherein the wiring member includes a flexible printed circuit board.
The optical communication device according to claim 1 , further comprising a resin body that seals the optical module, the wiring member, the second circuit board, and the another electronic element.
JP2003109176A 2003-04-14 2003-04-14 Optical communication device Expired - Fee Related JP3938088B2 (en)
JP2003109176A JP3938088B2 (en) 2003-04-14 2003-04-14 Optical communication device
US10/823,790 US20050008303A1 (en) 2003-04-14 2004-04-14 Optical module, an optical communication apparatus and a optical transceiver module
JP2004319629A JP2004319629A (en) 2004-11-11
JP3938088B2 true JP3938088B2 (en) 2007-06-27
ID=33470422
JP2003109176A Expired - Fee Related JP3938088B2 (en) 2003-04-14 2003-04-14 Optical communication device
US (1) US20050008303A1 (en)
JP (1) JP3938088B2 (en)
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JP4774920B2 (en) * 2005-10-31 2011-09-21 ソニー株式会社 Optical transceiver
JPH11344646A (en) * 1998-04-02 1999-12-14 Oki Electric Ind Co Ltd Optical module, plug for optical fiber connection, and optical coupler equipped with them
2003-04-14 JP JP2003109176A patent/JP3938088B2/en not_active Expired - Fee Related
2004-04-14 US US10/823,790 patent/US20050008303A1/en not_active Abandoned
JP2004319629A (en) 2004-11-11
US20050008303A1 (en) 2005-01-13
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