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

• Main Authors: MORIMOTO MASAHITO, OGOSHI HARUKI
• Format: Patent
• Language: English; Japanese
• Published: 27.08.2020
• Subjects: DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

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 【課題】低ＲＩＮトランスファー、低ＳＢＳ、低非線形効果、広帯域な波長域で増幅利得を制御して光増幅、の４つの課題を同時に解決すること。【解決手段】光伝送ファイバを伝送する信号光をラマン増幅するためのラマン増幅用光源であって、インコヒーレント光を出力する複数のインコヒーレント光源と、前記インコヒーレント光をラマン増幅する波長を有する２次励起光を出力する複数の励起光源と、前記複数のインコヒーレント光源および前記複数の励起光源に接続されており、前記インコヒーレント光を前記２次励起光によりラマン増幅して出力するラマン増幅用光ファイバと、前記光伝送ファイバに接続されており、前記ラマン増幅用光ファイバによりラマン増幅されたインコヒーレント増幅光が入力され、前記インコヒーレント増幅光を、前記信号光をラマン増幅する波長を有する１次励起光として前記光伝送ファイバに出力する出力部と、を備える。【選択図】図１