Granted Patent B2

US 7,042,635 · App. 10/862,578 · Granted May 9, 2006

Abstract

Claims (10)

1. A method for optimizing the gain of a parametric amplifier for a WDM signal, the method comprising:

a) fixing a pump wavelength of said amplifier at a first wavelength according to a zero dispersion of an optical fiber;

b) increasing a pump power of said amplifier at said first wavelength so that measured channel powers of a wavelength grid reach a first level P0;

c) tuning a wavelength of a pump source so as to reduce an excursion of the measured channel powers of the wavelength grid and maintain a minimum power of the channels of the grid at P1, where P1<P0;

d) increasing or decreasing the pump power so that the measured channel powers of the wavelength grid reach the first level P0; and

e) running the procedure steps c) to d) to obtain the first level P0 in the channels and obtain the minimum excursion in the channels.

2. A method according to claim 1 , wherein the wavelength of the pump laser source is tuned in steps.

3. A method according to claim 1 , wherein the wavelength of the pump laser source is tuned continuously.

4. A method according to claim 1 , wherein all channels of the wavelength grid are measured.

5. A method according to claim 1 , wherein a representative set of channels of the wavelength grid are measured.

Assignments (10)