MZI-based wavelength interrogation system with tunable-FBG  

作　　者：ZHANG Zhi-guo ZHANG Min YE Pei-da 

机构地区：[1]Key Lab. of Optical Communication ＆ Lightwave Technologies, Ministry of Education, Beijing University of Posts andTelecommunications, Beijing 100876, China

出　　处：《Optoelectronics Letters》2007年第5期368-371,共4页光电子快报（英文版）

基　　金：This study is supported by National Natural Science Foundation ofChina (No.60507007);National Basic Research Program of China(No. 2003CB314900);Program for New Century ExcellentTalents in University (NCET, Min Zhang 2007).

摘　　要：We proposed a scheme of fiber Bragg grating （FBG） sensor interrogation system based on all fiber Mach-Zehnder Interferometer （MZI） edge filter and tunable-FBG. The equal power signals from FBG sensor and tunable FBG are coupled into port 1 and port 2 of MZI respectively. The experimental results show that the interrogation precision of the proposed system is 0.02 nm in a range of I nm. Furthermore, the precision can be improved by adjusting the two interference arms of the filter.

关 键 词：光纤布拉格光栅 波长 干涉计 能量信号 

分 类 号：O433.1[机械工程—光学工程]