Bidirectional optical module and optical time domain...

Details Bidirectional optical module and optical time domain... Bidirectional optical module and optical time domain...

2009-01-05

2010-12-14

Peng, Charlie (Department: 2883)

Optical waveguides

With optical coupler

Particular coupling structure

C385S048000, C385S011000, C385S027000

Reexamination Certificate

active

07853104

ABSTRACT:
A bidirectional optical module according to the present invention emits light to an optical fiber and allows returning light from the optical fiber to enter and includes a plurality of light emitting elements that emit light to enter the optical fiber, a light receiving element that receives light having exited the optical fiber, and a non-reciprocal unit for making an optical path in a forward direction from the light emitting element to the optical fiber and an optical path in a backward direction from the optical fiber to the light emitting element different. Then, polarization planes of light incident on the optical fiber after being emitted from the plurality of light emitting elements are mutually orthogonal, and the non-reciprocal unit emits returning light of light emitted from the plurality of light emitting elements from the optical fiber toward the light receiving element to one light receiving element.

REFERENCES:
patent: 6480331 (2002-11-01), Cao
patent: 6532321 (2003-03-01), Zhang et al.
patent: 2002/0018286 (2002-02-01), Lee et al.
patent: 2004-145136 (2004-05-01), None

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