Patent ID: 7561325
Filing Date: 2009-07-14
Classification: H01S

Abstract:
1. An optical module comprising: an amplification optical fiber amplifying seed light with a predetermined wavelength which propagates therethrough, while being supplied with pumping light therein; a pumping light source outputting the pumping light to be supplied to said amplification optical fiber; an optical coupler disposed between said amplification optical fiber and said pumping light source, said optical coupler having a common port connected to one end of said amplification optical fiber, and a plurality of optical input/output ports each of which functions as an optical output port when said common port functions as an optical input port but functions as an optical input port when said common port functions as an optical output port; a delay optical fiber applying a delay time to the pumping light outputted from said pumping light source, said delay optical fiber having one end optically connected to said pumping light source, and another end optically connected to a first port among said plurality of optical input/output ports of said optical coupler; a photodetector optically connected to a second port among said plurality of optical input/output ports of said optical coupler; and a control section controlling at least one of an intensity of the seed light and an intensity of the pumping light inputted to said delay optical fiber, on a basis of a detection result of said photodetector.