Optical coupling apparatus for introducing and coupling an incid

Details Optical coupling apparatus for introducing and coupling an incid Optical coupling apparatus for introducing and coupling an incid

1991-03-26

1993-01-19

Gonzalez, Frank

Optical waveguides

With optical coupler

Input/output coupler

385 27, 385 37, 385 93, 359 42, G02B 632

Patent

active

051812657

ABSTRACT:
A photocoupler has a polarization converting device for converting laser light emitted from a laser source to a polarized beam of light having electric vectors oriented in a direction of a tangent of a circle having its center on an optical axis of the photocoupler and the phase of which beam is shifted by .pi. at the boundary of a declination line passing the center of the circle. The wave front of the converted laser light is spherical. And, a photocoupler for exciting a waveguided light which propagates radially from the center thereof is positioned so that the input coupling efficiency becomes maximum.

REFERENCES:
patent: 4885732 (1989-12-01), Sunagawa et al.
patent: 4887255 (1989-12-01), Handa et al.
patent: 4937808 (1990-06-01), Shimada et al.
patent: 4945527 (1990-07-01), Sunagawa
patent: 4971414 (1990-11-01), Funato et al.
patent: 4991919 (1991-02-01), Nishiwaki et al.

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