Optical communications – Multiplex – Wavelength division or frequency division
Reexamination Certificate
2002-03-21
2008-05-27
Li, Shi K. (Department: 2613)
Optical communications
Multiplex
Wavelength division or frequency division
C398S147000
Reexamination Certificate
active
07379670
ABSTRACT:
A method and apparatus is provided for managing chromatic dispersion in an NRZ-based WDM long-haul optical transmission system so that nonlinearities are reduced, especially those at the edge channels of the band. The method includes using between 500 ps
m and 2000 ps
m of residual dispersion and a 40%/60% pre/post DCU split ratio when the channel wavelengths are shorter than the zero dispersion wavelength. Using these dispersion compensation rules, the nonlinear propagation effects in NRZ-based WDM systems is reduced, thus allowing for higher optical power per channel and/or longer transmission distances.
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Bakhshi Bamdad
Golovchenko Ekaterina A.
Kovsh Dmitriy I.
Vaa Michael
Grossman Tucker Perreault & Pfleger PLLC
Li Shi K.
Tyco Telecommunications (US) Inc.
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