Photodetector array and optical branching filter using the...

Details Photodetector array and optical branching filter using the... Photodetector array and optical branching filter using the...

2006-06-13

2006-06-13

Vanderpuye, Kenneth (Department: 2633)

Optical communications

Receiver

C398S079000, C398S203000, C398S204000

Reexamination Certificate

active

07062178

ABSTRACT:
A light demultiplexer in which a signal and a noise in each channel may be distinctly separated is provided. The light demultiplexer comprises a light-receiving element array for receiving light beams demultiplexed every wavelength from a wavelength multiplexed light beam and arranged in a straight line. The light-receiving element array includes a plurality of light-receiving elements for monitoring signals, and a plurality of light-receiving elements for monitoring noises. The light-receiving elements for monitoring signals and the light-receiving elements for monitoring noise are alternately arrayed in a straight line the direction thereof is the same as that of the arrangement of the demultiplexed light beams.

REFERENCES:
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patent: 5299045 (1994-03-01), Sekiguchi
patent: 6268943 (2001-07-01), Kang
patent: 6271945 (2001-08-01), Terahara
patent: 6420985 (2002-07-01), Toughlian et al.
patent: 6580536 (2003-06-01), Chraplyvy et al.
patent: 862212 (1956-06-01), None
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patent: 9-210783 (1997-08-01), None
patent: 2000-213987 (2000-08-01), None
PCT International Search Report, Dec. 26, 2000.

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