Dispersion-compensating system

Details Dispersion-compensating system Dispersion-compensating system

2006-07-18

2006-07-18

Connelly-Cushwa, Michelle (Department: 2874)

Optical communications

Multiplex

Wavelength division or frequency division

C385S141000, C385S142000, C385S127000, C398S079000

Reexamination Certificate

active

07079769

ABSTRACT:
In the dispersion-compensating system of the present invention, a demultiplexer demultiplexes optical signals in a signal wavelength band of 1520 nm to 1620 nm propagating through a first common transmission line into C band (1520 nm to 1565 nm) and L band (1565 nm to 1620 nm). Then, the demultiplexer outputs the optical signals of C band into a first branched transmission line and the optical signals of L band into a second branched transmission line. A first dispersion-compensating device is provided on the first common transmission line and compensates for the dispersion in C and L bands. A second dispersion-compensating device is provided on the second branched transmission line and compensates for the dispersion in L band, which has not fully been compensated for by the first dispersion-compensating device. Hence, the dispersion of optical transmission line can fully be reduced in a wide signal light wavelength band.

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