Optical add/drop device

Details Optical add/drop device Optical add/drop device

2006-09-19

2006-09-19

Singh, Dalzid (Department: 2613)

Optical communications

Multiplex

Wavelength division or frequency division

C398S004000, C398S005000

Reexamination Certificate

active

07110674

ABSTRACT:
Disclosed herein is an optical add/drop device including an optical demultiplexer for separating WDM signal light into n optical signals where n is an integer not less than 2, n first optical switches to which the n optical signals output from the optical demultiplexer are supplied, respectively, a second optical switch for adding provided on the input side of the first optical switches, a third optical switch for dropping provided on the output side of the first optical switches, n regenerators for wavelength converting the optical signals passed through the first optical switches, and an optical multiplexer for wavelength division multiplexing the wavelength-converted optical signals. A transmission distance between nodes can be increased by using this device.

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patent: 6570685 (2003-05-01), Fujita et al.
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patent: 10508437 (1998-08-01), None
patent: 2000004460 (2000-01-01), None

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