Optical communications – Optical repeater system – Supervisory signal by repeater
Reexamination Certificate
2006-09-19
2006-09-19
Payne, David (Department: 2613)
Optical communications
Optical repeater system
Supervisory signal by repeater
C398S192000, C398S193000
Reexamination Certificate
active
07110680
ABSTRACT:
An optical communication system includes a plurality of nodes coupled by an optical fiber. The optical fiber comprises a gain medium and is operable to transmit optical signals in a plurality of channels. An optical pump is coupled to the optical fiber, and is operable to generate and transmit an optical pump signal co-propagating with the optical signals. The optical pump signal comprises a specified walk-off with respect to the optical signals and is operable to Raman amplify the signals in the optical fiber while maintaining an eye penalty below 0.5 decibels.
REFERENCES:
patent: 5991070 (1999-11-01), Zanoni et al.
patent: 6246515 (2001-06-01), Cereo et al.
patent: 6356383 (2002-03-01), Cornwell, Jr. et al.
patent: 6384963 (2002-05-01), Ackerman et al.
patent: 6850360 (2005-02-01), Chen et al.
patent: 6856768 (2005-02-01), Gnauck et al.
patent: 2001/0015220 (2001-08-01), Papernyl et al.
patent: 2001/0036004 (2001-11-01), Ackerman et al.
patent: 2002/0063949 (2002-05-01), Cornwall, Jr. et al.
patent: 2002/0097481 (2002-07-01), Du et al.
patent: 2003/0016437 (2003-01-01), Islam et al.
W. Jiang et al., “Crosstalk in Fiber Raman Amplification for WDM Systems,” Journal of Lightwave Technology, vol. 7, No. 9, pp. 1407-1411, Sep. 1989.
A. Siddiqui, “The Effect of Pump and Signal Laser Fluctuations on the Output Signal from Raman and Brillouin Optical Fiber Amplifiers,”Journal of Optical Communications, vol. 13, pp. 33-36, Mar. 1992.
Y. Chen et al., “Bi-directionally Pumped Broadband Raman Amplifier,”Technical Digest of ECOC 2001, TuL3-4, Sep. 2001, 2 pages.
S. Kado et al., “Broadband Flat-noise Raman Amplifier Using Low-noise Bi-directionally Pumping Sources,”Technical Digest of ECOC 2001, ThF4-10, 2 pages, Sep. 2001.
P.M. Krummrich et al., “System Performance Improvements by Codirectional Raman Pumping of the Transmission Fiber,” ECOC 2001, 2 pages, 2001.
V. Dominic et al., “Distributed Raman Amplification with Co-propagating Pump Light,” OAA 2001, 3 pages, 2001.
S. Radic et al., “Feasibility of Hybrid Raman/EDFA Amplification in Bidirectional Optical Transmission,”IEEE Photonics Technology Letters., vol. 14, No. 2, pp. 221-223, Feb. 2002.
Choudhary Seemant
Hoshida Takeshi
Baker & Botts L.L.P.
Payne David
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