Optical communications – Diagnostic testing – Determination of communication parameter
Reexamination Certificate
2006-09-26
2006-09-26
Vanderpuye, Kenneth (Department: 2613)
Optical communications
Diagnostic testing
Determination of communication parameter
C398S007000, C398S034000, C398S079000, C398S140000, C398S003000, C398S004000, C398S059000, C398S156000, C398S162000, C398S025000, C398S027000, C398S136000, C372S034000, C372S035000, C372S036000, C372S038020
Reexamination Certificate
active
07113700
ABSTRACT:
An optical transmission system includes an optical wavelength branching unit that shifts a wavelength transmission band in the short-wavelength or long-wavelength directions based on a branching filter operation temperature, and performs a branching operation on a wavelength-multiplexed signal. A reception transponder performs decoding on an error correction code. An error correction monitoring unit gathers an error correction amount upon which a branching filter temperature control unit sets the branching filter operation temperature. A transmission transponder performs encoding on an error correction code. An optical wavelength combining unit shifts the wavelength transmission band in the opposite direction from the shifting direction based on a combining filter operation temperature, to perform a combining operation on optical signals and output a wavelength-multiplexed optical signal. A combining filter temperature control unit sets the combining filter operation temperature based on the error correction amount sent from the optical reception device.
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Matsumoto Tooru
Morimoto Akio
Shimizu Yoshihiro
Takakuwa Makoto
Yoshida Shoji
Fujitsu Limited
Leung Danny Wai Lun
Staas & Halsey , LLP
Vanderpuye Kenneth
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