Optical communications – Transmitter and receiver system – Including optical waveguide
Reexamination Certificate
2005-11-08
2005-11-08
Phan, Hanh (Department: 2638)
Optical communications
Transmitter and receiver system
Including optical waveguide
C398S079000, C398S081000, C398S082000, C398S083000, C398S140000, C398S141000, C398S148000, C398S158000, C385S024000, C385S027000, C385S015000, C385S037000
Reexamination Certificate
active
06963695
ABSTRACT:
The present invention relates to an optical communication system including a structure for suppressing deterioration of transmission characteristics of signals added at each of nodes arranged in an optical transmission line, and a method of assigning signal channels. The optical communication system includes the optical transmission line for transmitting signals of plural channels between a transmitter and a receiver, and one or more nodes are arranged at predetermined positions of the optical transmission line. Each of the nodes includes an ADM for adding signals of a predetermined channel to the optical transmission line, and a signal channel at which the absolute value of accumulated-dispersion up to the receiver becomes smallest among signal channels which can be added is assigned to each of the nodes in advance or dynamically.
REFERENCES:
patent: 5903371 (1999-05-01), Arecco et al.
patent: 5978131 (1999-11-01), Lauzon et al.
patent: 6229935 (2001-05-01), Jones et al.
patent: 9-172449 (1997-06-01), None
patent: 10-13356 (1998-01-01), None
McDermott Will & Emery LLP
Phan Hanh
Sumitomo Electric Industries Ltd.
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