Optical communications – Fault recovery – Bypass inoperative element
Reexamination Certificate
2005-06-14
2005-06-14
Sedighian, M. R. (Department: 2633)
Optical communications
Fault recovery
Bypass inoperative element
C398S091000, C398S094000, C398S095000
Reexamination Certificate
active
06907195
ABSTRACT:
A wavelength division multiplexed (WDM) optical network includes a plurality of optical transmitters, each optical transmitter generating a data signal sent over a respective one of a plurality of signal channels, the plurality of signal channels being divided into a number of sub-bands where each sub-band includes at least two signal channels, and a plurality of substitute signal transmitters, the number of substitute signal transmitters being equal to the number of sub-bands, each substitute signal transmitter generating a substitute signal which provides loading in a corresponding sub-band. The WDM optical network also includes a combining circuit which combines the data signals output from the plurality of optical transmitters and the substitute signals output from the plurality of substitute signal transmitters into a WDM signal, and an optical transmission fiber which receives the WDM signal from the combining circuit.
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Clark, Jr. Thomas R.
Petricevic Vladimir
Shieh William
Yu Zhengchen
Dorsal Networks Inc.
Sedighian M. R.
Tran Dzung D.
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