基于SLED的光纤-珐珀非扫描相关解调系统光学特性分析与实验  

The optical characterization and experiments of fiber Fabry-Perot non-scanning coherent demodulation system based on SLED

作　　者：李金兰 王宁[2] 李钧寿 郑杰 

机构地区：[1]中国四联仪器仪表集团有限公司,重庆400000 [2]重庆大学光电工程学院,重庆400000 [3]重庆川仪分析仪有限公司,重庆400000

出　　处：《激光杂志》2014年第7期43-45,共3页Laser Journal

基　　金：国家(863计划)项目(2012AA040603)资助

摘　　要：为了提高光纤珐-珀非扫描式相关解调系统的解调速度,本文提出了基于SLED(超辐射发光二极管)的高速光纤珐-珀非扫描式相关解调系统,分析了SLED光源带宽和中心波长对系统输出信号的影响,理论分析表明:当SLED光源的中心波长为830nm,带宽为60nm时,系统信号具有很好的解调特性,验证了基于SLED光源的非扫描式相关解调系统的可行性。实验结果表明:SLED光源能够很好的实现光纤珐珀传感器的高速解调,解调速度能够达到1.5kHz,系统的解调稳定性达到±4.5nm。In order to improve the demodulation speed of fiber Fabry-Perot non-scanning coherent demodulation system, the high-speed fiber Fabry-Perot non-scanning coherent demodulation system based on SLED （Super Lumi-nescent Diode） is proposed in this paper. Moreover, we analyze the effects of SLED’s bandwidth and center wave-length on the output of system. And the theoretical study shows that：when the center wavelength and bandwidth of SLED is 830nm and 60nm separately, system signal gets excellent demodulation characteristics. Thus, the feasibility of non-scanning coherent demodulation system based on SLED has been validated theoretically. The experimental prototype is tested and results shows that： SLED can fulfill the fiber Fabry-Perot sensor high-speed demodulation pretty well that demodulation speed reachs 1.5kHz and demodulation stability of the system achieves ＆#177; 4.5nm.

关 键 词：光纤珐-珀传感器 非扫描式相关解调 

分 类 号：TP212.6[自动化与计算机技术—检测技术与自动化装置]