Method and apparatus for optical coupling and opto-electronic conversion

摘要

A method for converting an optical signal, propagating in an optical fiber, into an electrical output signal, including the following steps: providing an optical interface having opposing flat surfaces and being formed of a material having a refractive index that is substantially higher than the refractive index of the optical fiber; disposing a first of the opposing flat surfaces of the interface adjacent an output end of the optical fiber, and disposing a photodetector adjacent a second of the opposing flat surfaces of the interface; whereby the optical signal is coupled into the photodetector and converted by the photodetector into an electrical output signal.

主权项

1. A method for converting an optical signal, propagating in an optical fiber, having a core with an index of refraction of about 1.5, into an electrical output signal, comprising the steps of:
providing an optical interface having opposing flat surfaces and being formed of an optically transparent material having an index of refraction of about 3.1; disposing a first of the opposing flat surfaces of said interface adjacent an output end of said optical fiber that is orthogonal to the fiber axis, and disposing a photodetector adjacent a second of the opposing flat surfaces of said interface; and securing said optical interface to said fiber with an epoxy having an index of refraction of about 1.5; whereby said optical signal is focused and coupled into said photodetector and converted by said photodetector into an electrical output signal.