Patent ID: 7142356
Filing Date: 2006-11-28
Classification: H01S,H04B

Abstract:
1. A method for controlling a gain of a Raman fiber amplifier having M Raman pumps in an optical fiber system that supports N optical signal channels, the method comprising: (a) partitioning the N optical signal channels into K wavelength regions, wherein K is at least one; (b) determining a corresponding power variation for each wavelength region; (c) determining a corresponding pump power adjustment for each Raman pump using a predetermined function, the predetermined function relating the corresponding power variation for each said wavelength region to the corresponding power adjustment for each said Raman pump, the predetermined function corresponding to a linear relationship between the corresponding power adjustment and the corresponding power variation of each said wavelength region, the predetermined function comprising:  wherein k corresponds to a k wherein j corresponds to a j (d) adjusting each said Raman pump in accordance with the corresponding power adjustment; (e) configuring optical signal channels, wherein a signal power is different from a reference point only in the k (f) determining the linear coefficient T