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	Multiple stage raman optical amplifier
	DE DONNO, MARCOPIRELLI LABS S.P.A.; REPINGON, ALAINPIRELLI LABS S.P.A
	2005-09-14
著作权人	PIRELLI & C. S.P.A.
专利号	EP1573869A1
国家	欧洲专利局
文献子类	发明申请
其他题名	Multiple stage raman optical amplifier
英文摘要	The invention relates to a multiple stage Raman amplifier including an interstage wavelength-selective pump combiner. Wavelength-selection characteristics are such that the pump combiner substantially blocks the passage of the pump signal of the first stage to the second stage and/or vice versa while allowing the passage of the transmission signal from the first stage to the second stage. The pump combiner substantially blocks different portions of the wavelength spectrum of the pump radiation which is fed into the pump combiner from different ports. The pump combiner preferably includes thin-film filters. The pump combiner has therefore the multiple function of coupling the pump signal of the first (or second) pump source and of isolating from one another the pump signals of the two amplification stages. This allows the reduction of the number of passive components present in a multistage optical amplifier, which in turn leads to a decrease of the overall insertion loss in the amplifier and shorter assembly processing.
公开日期	2005-09-14
申请日期	2002-12-19
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/52926]
专题	半导体激光器专利数据库
作者单位	PIRELLI & C. S.P.A.
推荐引用方式 GB/T 7714	DE DONNO, MARCOPIRELLI LABS S.P.A.,REPINGON, ALAINPIRELLI LABS S.P.A. Multiple stage raman optical amplifier. EP1573869A1. 2005-09-14.

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