Four wave mixing suppression

Details Four wave mixing suppression Four wave mixing suppression

2008-02-20

2011-10-04

Pascal, Leslie (Department: 2613)

Optical communications

Multiplex

Wavelength division or frequency division

C398S196000

Reexamination Certificate

active

08032029

ABSTRACT:
Methods, systems and computer program products for countering the effects of four wave mixing are described. In one implementation, a controller can be used to shift an operating wavelength of an optical transmitter away from a zero-dispersion wavelength through which signals of the optical transmitter are transmitted. The controller can perform the shifting process while allowing sufficient margin for division multiplexing and minimal dispersion. The controller may determine an appropriate offset to be used for shifting the operating wavelength without subjecting the signals to a significant increase in undesirable effects such as dispersion, crosstalk and signal distortion which can impact the overall bit-error rate.

REFERENCES:
patent: 6661974 (2003-12-01), Akiyama et al.
patent: 7483599 (2009-01-01), Kish et al.
patent: 7653310 (2010-01-01), Sekine
patent: 2008/0205882 (2008-08-01), Mutalik et al.

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