Back-reflection reduction device

Details Back-reflection reduction device Back-reflection reduction device

2006-10-03

2006-10-03

Pak, Sung (Department: 2874)

Optical waveguides

With optical coupler

Input/output coupler

C385S033000

Reexamination Certificate

active

07116866

ABSTRACT:
The present invention is directed towards a back-reflection reduction device that is disposed between a support structure containing a plurality of optical waveguides and a bulk media. The support structure containing the optical waveguides has a substantially flat end face at which the optical waveguides terminate. Where the optical waveguides intersect the end face, they are substantially perpendicular to it. The back-reflection reduction device comprises a window disposed between the bulk media and the support structure. The window has a refractive index that is substantially identical to that of the optical waveguides. The window has an inner side that is affixed to the support structure and an opposing outer side. A gap exists between the window outer side and the bulk media. The gap provides an index of refraction substantially equal to unity.

REFERENCES:
patent: 4783137 (1988-11-01), Kosman et al.
patent: 6212316 (2001-04-01), Presley
patent: 6550984 (2003-04-01), Andersen et al.
patent: 2002/0085287 (2002-07-01), Egawa
patent: 2002/0097956 (2002-07-01), Kikuchi et al.

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