Patent ID: 6647038
Filing Date: 2003-11-11
Classification: G02B,H01S

Abstract:
A modulated optoelectronic laser module for transferring a signal, comprising:a laser diode having an active region, a rear facet coated with a highly reflective layer forming a highly reflective surface and a front facet coated with an antireflection layer; a single-mode glass fiber having an end face and a Bragg interference grating, disposed directly downstream of said end face, providing frequency-selective feedback, said highly reflective surface and said Bragg interference grating forming an optical resonator, said Bragg interference grating functioning as a fiber Bragg grating in said optical fiber, light being sent to said fiber Bragg grating or received from said fiber Bragg grating via said front facet of said laser diode; a coupling lens system disposed between said laser diode and said glass fiber for coupling the light, said coupling lens system having a high-index coupling lens with a focal length of less than two millimeters; and a standard TO housing accommodating said laser diode, said standard TO housing having a fiber plug connector for attaching said glass fiber to said housing, said fiber Bragg grating being formed in a region of said glass fiber within said fiber plug connector as an optical waveguide.