Optical communications – Multiplex – Wavelength division or frequency division
Reexamination Certificate
2001-10-12
2008-10-28
Chan, Jason (Department: 2613)
Optical communications
Multiplex
Wavelength division or frequency division
C398S094000, C398S095000, C398S083000
Reexamination Certificate
active
07444079
ABSTRACT:
An optical control monitor and a method for adjusting for changes in optical signals transmitted through an optical network. The method comprises the steps of transmitting a set of optical signals through a network, each of the optical signals having a respective wavelength; and tracking changes to said set of signals by passing each of the signals through a filter having a bandpass function, and dithering the filter bandpass about the wavelengths of each of said set of signals to generate filter output signals. The filter output signals are used to adjust the network or the set of optical signals to compensate for said changes.
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DeCusatis Casimer M.
Jacobowitz Lawrence
Chan Jason
Curs Nathan M.
International Business Machines - Corporation
Jaklitsch, Esq. Lisa U.
Scully , Scott, Murphy & Presser, P.C.
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