SG_DBR激光器波长控制系统的设计与实现.pdf

25 4 Vol. 25, No. 4 2005 8 APPLI ED LASER August 2005 * SG- DBR * 邓小波 赵华凤 俞 涛 何 熙 周开军 马晓红 ( , 100084) SG- DBR , - , SG- DBR , , ! 0. 02nm SG- DBR Design and Implementation of Wavelength Control System for SG- DBR Lasers Deng X i obo Zh o H u feng Yu T o H e X i Zhou K ijun M Xi ohong (Dep artment of Electronic Engineering , Ts inghua Univers ity, Beij ing 100084 ) Abstract According to the w velength tuning ch r cteristic of widely tun ble SG- DBR l sers, kind of w velength con t rol system is developed in this p per . By utom tic lly gener ting nd invoking the look- up t ble, w hich is used to store the rel t ionship betw een the w velengths nd tuning current s, the p rt icul r l sing w velength of SG- DBR l ser is obt ined. Due to the ut iliz t ion of virtu l inst rument nd micro controlled unit in the sy stem, the pp r tus cost is reduced nd the system is sizing down. The t uning experiments show t h t this sy stem h s high precision of w velength control nd the error of w ve length control is not more th n ! 0. 02 nm. Key words S mpled Gr t ing, SG- DBR , W velength Control, Look up T ble, Virtu l Instrument , Micro Controlled Unit DBR( S mpled Gr ting DBR, SG- , , DBR) SG- DBR , , SG- DBR , , [ 1- 4] , WDM , , 1 , SG- DBR SG- DBR , , SG - DBR [ 7] [ 5, 6] L bVIEW Ver nier , SG- DBR 30nm , , SG - DBR , , , SG- DBR