Optical communications – Transmitter and receiver system – Including optical waveguide
Reexamination Certificate
2005-06-21
2005-06-21
Pascal, Leslie (Department: 2633)
Optical communications
Transmitter and receiver system
Including optical waveguide
C398S159000, C398S208000, C398S148000, C398S149000
Reexamination Certificate
active
06909851
ABSTRACT:
An apparatus which compensates for dispersion in an optical transmission line. The apparatus includes a fixed dispersion compensator and a variable dispersion compensator. The fixed dispersion compensator has a fixed dispersion amount and coarsely compensates for the dispersion in the transmission line. The variable dispersion compensator has a variable dispersion amount and finely compensates for the dispersion in the transmission line. The fixed and variable dispersion compensators can be located at many positions. For example, one may be in a transmitter and the other may be in a receiver. Both may be in the transmitter and/or the receiver. One may be in either the transmitter or the receiver, with the other in an optical repeater positioned along the transmission line.
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Fujitsu Limited
Pascal Leslie
Staas & Halsey , LLP
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