Optical add/drop multiplexer

Details Optical add/drop multiplexer Optical add/drop multiplexer

2011-08-30

2011-08-30

Vanderpuye, Ken N (Department: 2613)

Optical communications

Multiplex

Wavelength division or frequency division

C398S082000, C398S079000, C398S043000, C398S033000

Reexamination Certificate

active

08009987

ABSTRACT:
There is provided a shutdown controller that monitors the temperature of an optical multiplexer and maximizes the loss of an optical attenuator when a temperature monitor result is abnormal. An optical level change detection circuit section is disposed with respect to an optical level monitor of individual monitors in an optical add/drop multiplexer. An optical level monitor of a total main signal is disposed downstream of the optical multiplexer. The inconsistency of the wavelength number is detected by comparing the total of the optical level monitors of the individual channels with the optical level value of the optical level monitor, upon which shutdown control is performed in which the loss of the optical attenuator is maximized in only the channel whose optical level change is detected by the optical level change detection circuit section.

REFERENCES:
patent: 5617234 (1997-04-01), Koga et al.
patent: 6980742 (2005-12-01), Liden et al.
patent: 7634196 (2009-12-01), Gerstel et al.
patent: 2004/0161234 (2004-08-01), Ozawa
patent: 2005/0226621 (2005-10-01), Kikuchi et al.
patent: 2006/0072918 (2006-04-01), Gerstel et al.
patent: 2004-032088 (2004-01-01), None
patent: 2005-286721 (2005-10-01), None
patent: 2006-101470 (2006-04-01), None
patent: 2007-104103 (2007-04-01), None

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