Optical communications – Transmitter and receiver system – Including optical waveguide
Reexamination Certificate
2011-08-02
2011-08-02
Phan, Hanh (Department: 2613)
Optical communications
Transmitter and receiver system
Including optical waveguide
C398S081000, C398S158000, C398S159000
Reexamination Certificate
active
07991295
ABSTRACT:
A method is provided for dispersion compensation of an optical signal communicated in an optical network comprising a plurality of spans of low chromatic dispersion fiber. The method includes receiving an optical signal comprising a plurality of channels, where the information communicated in a first set of one or more of the channels is modulated using a first modulation technique and where the information communicated in a second set of one or more of the channels is modulated using a second modulation technique. The method also includes uniformly undercompensating for optical dispersion in the optical signal across all of the channels of the optical signal such that the accumulated dispersion in the optical signal increases with each span over which the optical signal is communicated. In particular embodiments, all of the channels of the optical signal are uniformly undercompensated in the range of approximately 60% to approximately 85% dispersion compensation for each span.
REFERENCES:
patent: 7539417 (2009-05-01), Okuno
patent: 7693425 (2010-04-01), Vassilieva et al.
patent: 2007/0140700 (2007-06-01), Vassilieva et al.
Furst et al., “Analysis of Crosstalk in Mixed 43 Gb/s RZ-DQPSK and 10.7 Gb/s DWDM Systems at 50 GHz Channel Spacing,” 3 pages, 2007 Optical Society of America, 2007.
Gnauck et al., “Spectrally Efficient (0.8 b/s/Hz) 1-Tb/s (25×42.7 Gb/s) RZ-DQPSK Transmission Over 28 100-km SSMF Spans with 7 Optical Add/Drops,” 2 pages, 2007.
Charlet et al., “Nonlinear Interactions Between 10Gb/s NRZ Channels and 40Gb/s Channels with RZ-DQPSK or PSBT Format, over Low-Dispersion Fiber,” 2 pages, 2006.
Sano et al., “14-Tb/s (140×111-Gb/s [D,/WDM) CSRZ-DQPSK Transmission over 160 km Using 7-THz Bandwidth Extended L-band EDFAs,” 2 pages, 2006.
Lefrancois et al., “Cross Comparison of the Nonlinear Impairments Caused by 10Gbit/s Neighboring Channels on a 40Gbit/s Channel Modulated with Various Formats, and Over Various Fiber Types,” 2006 Optical Society, 3 pages, 2006.
Kinoshita Susumi
Vassilieva Olga I.
Baker & Botts L.L.P.
Fujitsu Limited
Phan Hanh
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