Method for narrowing the wavelength spacing of a w

专利名称：Method for narrowing the wavelength

spacing of a wavelength monitor in a lasersystem

发明人：Le-Gall, Franck,Mousseaux, Daniel申请号：EP00440237.6申请日：20000901公开号：EP1185005A1公开日：20020306

专利附图：

摘要：The invention relates to a method of extending the capture range (CR) of awavelength monitor for the lasers of a wavelength division multiplex (WDM) transmission

system wherein the capture range (CR) comprises one wavelength period (FSR) of aperiodic error signal (E) generated with the aid of the wavelength filter (4),the capturerange contains a desired wavelength (λ0) of a plurality of equidistant wavelengths (λi,λi+1, λi+2, ...),each of the lasers of the WDM transmission system is set at a desiredwavelength (λ0) by comparing the error signal (E) with an comparison value (C1 or C2),that is unique in the capture range (CR) for a chosen slope sign,the wavelength period(FSR) of the error signal (E) is set such that it corresponds to double the wavelengthspacing (A) of two adjacent wavelengths of the WDM transmission system andthe desiredwavelength (λ0) is set taking into account the slope sign of the error signal (E), and theinvention further relates to a wavelength monitor and laser system therefor.

申请人：ALCATEL

地址：54, rue la Boétie 75008 Paris FR

国籍：FR

代理机构：Brose, Gerhard, Dipl.-Ing.

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