Optical communications – Multiplex – Wavelength division or frequency division
Reexamination Certificate
2005-12-19
2009-10-27
Li, Shi K (Department: 2613)
Optical communications
Multiplex
Wavelength division or frequency division
Reexamination Certificate
active
07609969
ABSTRACT:
A method for compensating for optical dispersion in an optical signal includes receiving an optical signal comprising a plurality of channels. The information being communicated in a first set of channels is modulated using a first modulation technique, and the information being communicated in a second set of channels is modulated using a second modulation technique. The method also includes compensating for optical dispersion in the optical signal such that dispersion compensation for the first set of channels is complete and such that dispersion compensation for the second set of channels is incomplete. In addition, the method includes splitting the optical signal into a first copy and a second copy, terminating the second set of channels in the first copy, performing additional dispersion compensation on the second copy such that dispersion compensation for the second set of channels is complete, and terminating the first set of channels in the second copy.
REFERENCES:
patent: 6771854 (2004-08-01), Matsuoka et al.
patent: 6823108 (2004-11-01), Leisching
patent: 7149433 (2006-12-01), Grubb et al.
patent: 7277648 (2007-10-01), Lanne et al.
patent: 2001/0046077 (2001-11-01), Akiyama et al.
patent: 2003/0185568 (2003-10-01), Ooi et al.
patent: 2004/0184814 (2004-09-01), Ooi et al.
patent: 2006/0045532 (2006-03-01), Yano
patent: 2006/0067704 (2006-03-01), Fishman 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.
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.
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.
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.
U.S. Appl. No. 12/047,584, entitled “Method and System for Compensating for Optical Dispersion in an Optical Signal,” filed Mar. 13, 2008, pp. 1-22, 3 pages of drawings, Mar. 13, 2008.
Kinoshita Susumu
Vassilieva Olga I.
Baker & Botts L.L.P.
Fujitsu Limited
Li Shi K
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