Optical communications – Transmitter and receiver system – Including compensation
Reexamination Certificate
2006-02-28
2006-02-28
Pascal, Leslie (Department: 2633)
Optical communications
Transmitter and receiver system
Including compensation
C398S081000, C398S147000, C398S148000, C398S208000, C398S209000
Reexamination Certificate
active
07006770
ABSTRACT:
The invention relates to an optical receiving station, an optical communication system, and a dispersion controlling method for precisely controlling chromatic dispersion in an optical transmission line or chromatic dispersion in an optical transmission line that varies with time. An optical receiving station is provided with a dispersion compensating section for receiving, via an optical transmission line, an optical signal modulated according to an optical duo-binary modulation method and for changing a dispersion value to be used for compensating for chromatic dispersion in an optical transmission line, an intensity detecting section for detecting the intensity of a specific frequency component of the optical signal output from the dispersion compensating section, and a controlling section for adjusting the dispersion value of the dispersion compensating section so that the output of the intensity detecting section has a predetermined extreme value.
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Akiyama Yuichi
Ishikawa George
Ooi Hiroki
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