Wavelength path monitoring/correcting apparatus in...

Details Wavelength path monitoring/correcting apparatus in... Wavelength path monitoring/correcting apparatus in...

2007-04-03

2007-04-03

Pascal, Leslie (Department: 2613)

Optical communications

Multiplex

Optical switching

C398S012000, C398S019000, C398S047000, C398S051000

Reexamination Certificate

active

10635943

ABSTRACT:
A wavelength-path-monitoring/correcting apparatus used in a transparent OXC is disclosed. The apparatus includes: a path-information-generating section for generating path-monitoring information; a plurality of optical couplers for coupling each output signal of the wavelength-division demultiplexers with the pertinent path-monitoring information; a plurality of optical switches for switching each optical signal inputted from the optical couplers; a plurality of wavelength-division multiplexers for multiplexing optical signals inputted through the optical switches; a path-information-detecting section for detecting the path-monitoring information from optical signals outputted from the wavelength-division multiplexers; and, a path-control section for comparing the path-monitoring information detected through the path-information-detecting section with predetermined optical-switching information and for correcting switched paths.

REFERENCES:
patent: 5754320 (1998-05-01), Watanabe et al.
patent: 5867289 (1999-02-01), Gerstel et al.
patent: 6559984 (2003-05-01), Lee et al.
patent: 6788896 (2004-09-01), Wang et al.
patent: 08-186559 (1996-07-01), None
patent: 2000-069510 (2000-03-01), None

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