Optical communications – Multiplex – Wavelength division or frequency division
Reexamination Certificate
2007-03-13
2007-03-13
Singh, Dalzid (Department: 2613)
Optical communications
Multiplex
Wavelength division or frequency division
C398S033000, C398S158000, C398S162000, C398S196000, C398S198000
Reexamination Certificate
active
09964190
ABSTRACT:
A method and system for modulating an optical signal to encode data therein. The method comprises the steps of directing the optical signal through a filter mechanism having a passband function including a center wavelength, and modulating the center wavelength of the optical signal to establish a difference between the center wavelengths of the filter mechanism and the optical signal to represent a data value. With the preferred implementation of the invention, a transmit device is used to encode the data in the optical signal, and a receive device is provided to decode the signal. The transmit device modulates the center wavelength of the optical signal to establish a difference between the center wavelength and a predefined wavelength to encode data in the optical signal, and the transmit device then transmits the optical signal. The receive device receives the optical signal from the transmit device and processes that signal to identify the encoded data.
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DeCusatis Casimer M.
Jacobowitz Lawrence
International Business Machines - Corporation
Jaklitsch, Esq. Lisa U.
Scully , Scott, Murphy & Presser, P.C.
Singh Dalzid
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