Optical communications – Multiplex – Wavelength division or frequency division
Reexamination Certificate
2003-04-18
2008-12-23
Phan, Hanh (Department: 2613)
Optical communications
Multiplex
Wavelength division or frequency division
C398S066000, C398S067000, C398S068000, C398S070000, C398S071000, C398S072000, C398S033000, C398S031000, C398S038000, C398S177000, C398S091000, C398S093000, C398S094000, C398S095000, C398S158000, C398S156000, C398S192000, C398S195000, C398S196000, C398S197000, C385S024000, C385S037000, C385S014000, C385S015000, C385S027000, C372S032000, C372S034000, C372S036000, C372S038020
Reexamination Certificate
active
07469102
ABSTRACT:
Various methods, systems, and apparatuses is described in which a passive-opticalnetwork includes a first multiplexer/demultiplexer, a second multiplexer/demultiplexer, a wavelength tracking component, and a transmission wavelength controller. The first multiplexer/demultiplexer is located in a first location. The second multiplexer/demultiplexer is located in a second location remote from the first location. The wavelength tracking component determines the difference between the transmission band of wavelengths of the first multiplexer/demultiplexer and the second multiplexer/demultiplexer to provide a control signal to match the transmission band of wavelengths of the first multiplexer/demultiplexer and the second multiplexer/demultiplexer. The transmission wavelength controller alters an operating parameter of the first multiplexer/demultiplexer based on the control signal to control the transmission band of wavelengths of the first multiplexer/demultiplexer.
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Chu Kwang-Uk
Lee Chang-Hee
Blakely , Sokoloff, Taylor & Zafman LLP
Novera Optics, Inc.
Phan Hanh
LandOfFree
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