LIGHT SOURCE FOR RAMAN AMPLIFICATION, RAMAN SOURCE SYSTEM FOR RAMAN AMPLIFICATION, RAMAN AMPLIFIER, RAMAN AMPLIFIER SYSTEM

摘要

PROBLEM TO BE SOLVED: To simultaneously solve four problems of optical amplification by controlling amplification gains by low RIN transfer, low SB low nonlinear effect, and broad band wavelength region.SOLUTION: A light source for Raman amplification Raman-amplifies signal light for transmitting an optical transfer fiber, and includes: a plurality of incoherent light sources for outputting incoherent light; a plurality of excitation light sources for outputting secondary excitation light having a wavelength for Raman-amplifying the incoherent light; an optical fiber for Raman amplification connected to the plurality of incoherent light sources and the plurality of excitation light sources and amplifying and outputting and Raman-amplifying the incoherent light by the secondary excitation light; and an output part connected to the optical transfer fiber and inputted with the incoherent amplification light Raman-amplified by the optical fiber for Raman amplification and outputting the incoherent amplification light to the optical transfer fiber as primary excitation light having the wavelength which Raman-amplifies the signal light.SELECTED DRAWING: Figure 1