利用全光纤干涉解调技术的光纤光栅复用传感系统  

Multiplexed fiber Bragg grating sensing system based on a novel demodulation technique using an all-fiber interferometer

作　　者：陈长勇[1] 乔学光[1] 贾振安[1] 周红[1] 郭团[1] 孙安[1] 

机构地区：[1]西安石油大学光纤传感实验室,西安710065

出　　处：《光学技术》2004年第5期567-570,共4页Optical Technique

基　　金：国家863计划资助项目(2002AA313150);国家自然科学基金资助项目(69877025);国家教育部科学技术重点项目(02190)

摘　　要：提出了一种用于光纤光栅传感波长检测的新方法。系统采用全光纤Mach Zehnder干涉仪,运用动态的自参考相位检测方式,结合微机实时处理技术,实现了对三点复用传感器的高分辨率(0.99pm)解调,单点测量范围达3.32nm。系统结构简单、成本低,可以同时检测静态和低频动态信号。A novel method of detecting wavelength shift for fiber Bragg grating sensing application is proposed. The system, which employs an all-fiber Mach-Zehnder interferometer and adopts dynamic self-reference phase measuring technique, has successfully interrogating three-points-multiplied sensors by virtue of the real-time computer processing technique with high resolution of 0.99pm and large measurable range of 3.32nm for single point. This system can detect both static and dynamic signal and has a merit of simple structure and low cost.

关 键 词：光纤光栅 波长漂移量 全光纤干涉仪 复用传感器 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]