Optical device

Details Optical device Optical device

2007-01-30

2008-05-20

Kim, Ellen E. (Department: 2874)

Optical waveguides

With optical coupler

Plural

C385S014000, C385S091000

Reexamination Certificate

active

07376297

ABSTRACT:
An optical device has an optical fiber, an optical demultiplexer having an optical demultiplexing member for demultiplexing a portion of an optical signal beam transmitted through the optical fiber, as a demultiplexed optical signal beam, and guiding the demultiplexed optical signal beam out of the optical fiber, an optical path changer for changing an optical path of the demultiplexed optical signal beam guided out of the optical fiber, a waveguide serving as at least a medium from which the demultiplexed optical signal beam is emitted to the optical path changer, and a filter disposed on a surface of the waveguide. An angle of incidence of the demultiplexed optical signal beam on the filter is equal to or greater than 0.5°.

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