Optical: systems and elements – Optical amplifier – Raman or brillouin process
Reexamination Certificate
2007-01-23
2007-01-23
Hughes, Deandra M. (Department: 3663)
Optical: systems and elements
Optical amplifier
Raman or brillouin process
C398S031000
Reexamination Certificate
active
11343647
ABSTRACT:
A method and apparatus for controlling the pump powers of a broadband DWDM optical system using Raman amplification which determines pump settings that are advantageously directed to minimizing the peak-to-peak ripple of the channel powers with respect to a given per-channel target. The illustrative method and apparatus first formulates a linear programming optimization problem, and then solves the formulated linear program in order to derive a new set of pump powers to be applied to the Raman amplification pumps. In accordance with the principles of the invention, the formulated linear programming optimization problem advantageously includes one or more “virtual” channels in addition to the actual channels used in the optical transmission system. The linear program may be solved with use of any conventional linear programming solution technique, such as, for example, the simplex method.
REFERENCES:
patent: 6366728 (2002-04-01), Way et al.
patent: 6417958 (2002-07-01), Du et al.
patent: 6424455 (2002-07-01), Dmitri
patent: 6611370 (2003-08-01), Namiki et al.
patent: 6636659 (2003-10-01), Kagi et al.
patent: 6674568 (2004-01-01), Liu
patent: 6697187 (2004-02-01), Seydnejad et al.
patent: 6734954 (2004-05-01), Reepschlager et al.
patent: 6839523 (2005-01-01), Roberts
patent: 6867906 (2005-03-01), Eder et al.
patent: 6912084 (2005-06-01), Freund
patent: 7038843 (2006-05-01), Denkin et al.
patent: 7054058 (2006-05-01), Bock et al.
patent: 7068421 (2006-06-01), Tokura et al.
patent: 2003/0174387 (2003-09-01), Eggleton et al.
Grant, Andrew. Calculating the Raman Pump Distribution to Achieve Minimum Gain Ripple. IEEE Journal of Quantum Electronics, vol. 38, No. 11, Nov. 2002.
Giltrelli et al. Semianalytical Approach to the Gain Ripple Minimizatin in Multiple Pump Fiber Raman Amplifiers. IEEE Photonics Technology Letters. vol. 16. No. 11. Nov. 2004.
Fludger et al. Ultra-wide bandwidth Raman Amplifiers. OFCC 2002. Mar. 17-22, 2002. pp. 60-62.
Hasegawa, A., “Numerical Study of Optical Soliton Transmission Amplified Periodically by the Stimulated Raman Process”, Appl. Opt., vol. 23, No. 19, pp. 3302-3309, 1984.
Kidorf, H. et al., “Pump Interactions In a 100-nm Bandwidth Raman Amplified”, IEEE Phton. Technol. Lett., vol. 11, No. 5, pp. 530-532, 1999.
Liu, X., A Fast Control Algorithm For Achieving Flat Broadband Raman Gain With Multiple Pumps, Technical Memorandum No. 10009609-010115-48TM, Bell Laboratories, Lucent Technologies, USA, 2001.
Mollenauer, L. et al., “Soliton Propagation In Long Fibers With Periodically Compensated Loss”, IEEE J. Quantum Electron., vol. QE-22, No. 1, pp. 157-173, 1986.
Mollenauer, L. et al., “Demonstration of Soliton Transmission Over More Than 4000 km in Fiber with Loss Periodically Compensated by Raman Gain”, Opt. Letters, vol. 13, No. 8, pp. 675-677, 1988.
Namiki, S. et al., “Ultrabroad-Band Raman Amplifiers Pumped and Gain-Equalized by Wavelenth-DivisionMultiplexed High-Power Laser Diodes”, IEEE J. Select. Topics Quantum Electron., vol. 7, No. 1, pp. 3-16, 2001.
Perlin, V.E. et al., “On Distributed Raman Amplification for Ultrabroad-Band Long-Haul WDM Systems”, J. Lightwave Technol., vol. 20, No. 3, pp. 409-416, 2002.
Perlin, V.E. et al., “Optical Design of Flat-Gain Wide-Band Fiber Raman Amplifiers”, J. Lightwave Technol., vol. 20, 2, pp. 250-254, 2002.
Yan, M. et al., “Automatic Design Scheme for Optical-Fiber Raman Amplifiers Backward-Pumped With Multiple Lasewr Diode Pumps”, IEEE Phton. Technol. Lett., vol. 13, No. 9, pp. 948-950, 2001.
Zhou, X. et al., “A Simplified Model and Optical Design of a Multiwavelength Backward-Pumped Fiber Raman Amplifier”, IEEE Photon. Technol. Lett., vol. 13, No. 9, pp. 945-947, 2001.
Raghavan Narasimhan
Sadler David A
White Christopher Alan
Brown Kenneth M.
Hughes Deandra M.
Lucent Technologies - Inc.
LandOfFree
Method and apparatus for controlling pump powers of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for controlling pump powers of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for controlling pump powers of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3792577