Source: http://www.google.ca/patents/US7261474
Timestamp: 2015-11-29 23:07:56
Document Index: 290756781

Matched Legal Cases: ['art.\n5', 'art.\n6', 'art.\n7', 'art.\n8', 'art.\n9', 'art.\n11']

Patent US7261474 - Connection structure between optical element and optical fiber, connection ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsTo provide a connection structure between an optical element and an optical fiber, which makes it possible to inexpensively secure optical transmission between the optical element and the optical fiber. A connection structure between an optical element and an optical fiber of includes an electro optical...http://www.google.ca/patents/US7261474?utm_source=gb-gplus-sharePatent US7261474 - Connection structure between optical element and optical fiber, connection method thereof, and optical moduleAdvanced Patent SearchPublication numberUS7261474 B2Publication typeGrantApplication numberUS 10/769,874Publication date28 Aug 2007Filing date3 Feb 2004Priority date10 Feb 2003Fee statusLapsedAlso published asUS20040165825Publication number10769874, 769874, US 7261474 B2, US 7261474B2, US-B2-7261474, US7261474 B2, US7261474B2InventorsTsuyoshi KanekoOriginal AssigneeSeiko Epson CorporationExport CitationBiBTeX, EndNote, RefManPatent Citations (19), Classifications (10), Legal Events (5) External Links: USPTO, USPTO Assignment, EspacenetConnection structure between optical element and optical fiber, connection method thereof, and optical module
US 7261474 B2Abstract
To provide a connection structure between an optical element and an optical fiber, which makes it possible to inexpensively secure optical transmission between the optical element and the optical fiber. A connection structure between an optical element and an optical fiber of includes an electro optical element, an optical fiber, and a connecting part. The electro optical element includes an optical surface and a base member provided on the optical surface. The connecting part is coupled to an end surface of the optical fiber and a top surface of the base member.
an optical element including an optical surface;
a base member that is formed on the optical surface;
an optical fiber including a core and a clad; and
a connecting part that joins an end surface of the optical fiber and a top surface of the base member,
a maximum cross section of the connecting part is larger than (1) a contact surface between the connecting part and the optical fiber, and (2) a contact surface between the connecting part and the base member.
2. The connection structure according to claim 1, a refractive index of the connecting part being almost equal to a refractive index of the core of the optical fiber.
3. The connection structure according to claim 1, the refractive index of the connecting part being greater than a refractive index of the clad of the optical fiber.
4. The connection structure according to claim 1, a height of the end surface of the core being different from a height of an end surface of the clad at an end part of the optical fiber that is joined to the connecting part.
5. The connection structure according to claim 4, portion of the core is not covered by the clad at the end part.
6. The connection structure according to claim 5, the core and the clad forming a convex portion at the end part.
7. The connection structure according to claim 5, an area that surrounds the connecting part being covered by a sealant at the end part.
8. The connection according to claim 7, a refractive index of the sealant being smaller than the refractive index of the core of the optical fiber and the refractive index of the connecting part.
9. The connection structure according to claim 8, the refractive index of the connecting part being almost equal to the refractive index of the core of the optical fiber, and the refractive index of the sealant being almost equal to the refractive index of the clad of the optical fiber.
10. The connection structure according to claim 4, an inner wall of the clad does not cover the core at the end part.
11. The connection structure according to claim 10