用于光纤传感网的窄线宽多波长光纤光源研究  

Narrow Linewidth Multi-Wavelength Fiber Source for Optical Fiber Sensor Network

作　　者：王肇颖[1,2] 胡苗苗[1,2] 葛春风[1,2] 贾东方[1,2] 桑梅[1,2] 杨天新[1,2] 刘铁根[1,2] 

机构地区：[1]天津大学精密仪器与光电子工程学院,天津300072 [2]天津大学光电信息技术教育部重点实验室,天津300072

出　　处：《天津大学学报》2012年第2期106-110,共5页Journal of Tianjin University(Science and Technology)

基　　金：国家重点基础研究发展计划(973计划)资助项目(2010CB327806)

摘　　要：窄线宽多波长光纤光源是光纤传感系统中的重要光源,可同时为多路复用技术中的传感器阵列提供所需的多个工作波长.为此对多波长光纤光源的稳态输出进行了数值模拟,理论分析了未泵浦掺铒光纤长度对输出线宽的窄化作用.同时实验构建了一种带有单程反馈和线宽窄化机制的多波长光纤光源,测量分析了这2种机制以及激光腔输出耦合比对多波长输出结果的影响.实验实现功率谱不平坦度<±3,dB时,多波长个数可达27个,3,dB线宽约0.06,nm,波长在50,GHz范围内整体连续可调.Narrow linewidth multi-wavelength fiber source is one of the most important instruments in optical fiber sensor system, which can simultaneously provide many different wavelengths for sensor array in the multiplexing technique. The stable ouput of multi-wavelength fiber source and the linewidth narrowing mechanism of unpumped erbium doped fiber were simulated. A multi-wavelength fiber source with one-way feedback mechanism and linewidth narrowing mechanism was constructed experimentally. The impacts of the two mechanisms and the output ratio of laser cavity on the output were observed and analyzed. 27 wavelengths with 0.06 nm linewidth were obtained within ± 3 dB power variation, which can be tuned within 50 GHz.

关 键 词：光纤传感 光纤光源 窄线宽 多波长 半导体光放大器 

分 类 号：TN25[电子电信—物理电子学]