Optical communications – Transmitter and receiver system – Including compensation
Reexamination Certificate
2005-03-22
2005-03-22
Pascal, Leslie (Department: 2633)
Optical communications
Transmitter and receiver system
Including compensation
C398S081000, C398S149000, C398S147000
Reexamination Certificate
active
06871024
ABSTRACT:
The present invention aims at realizing a dispersion compensating method capable of readily conducting automatic compensation of waveform degradation caused by dispersion characteristics of an optical transmission path, and at providing a dispersion compensating apparatus and an optical transmission system, of a smaller size at a reduced cost. To this end, the dispersion compensating apparatus of the present invention comprises: a variable dispersion compensator for compensating for the dispersion of optical signal input via an optical transmission path; a bit error information monitoring circuit for generating bit error information of a received signal output from the variable dispersion compensator via an optical receiving circuit; and a controlling circuit for optimally controlling a wavelength dispersion value of the variable dispersion compensator based on the bit error information from the bit error information monitoring circuit.
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Mikami Satoshi
Nishimoto Hiroshi
Fujitsu Limited
Pascal Leslie
Staas & Halsey , LLP
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