Patent ID: 7145718
Filing Date: 2006-12-05
Classification: H01S,H04B

Abstract:
1. A method of controlling an optical fiber amplifier which pumps light into a rare-earth element doped optical fiber, and amplifies the light propagating through said rare-earth element doped optical fiber, comprising; adjusting power of the light pumped into said rare-earth element doped optical fiber; and controlling a transmission wavelength characteristic of a dynamic gain equalizer which equalizes a wavelength deviation of an output power of the light propagated and amplified through said rare-earth element doped optical fiber, according to a change in a gain wavelength characteristic occurring due to the adjusting of the power of said pumping light, to thereby extend a light wavelength band, of the light amplified by said rare-earth element doped optical fiber, to either a short wavelength side or a long wavelength side.