摘要
建立了基于光纤Fabry-Perot(F-P)腔与光纤Bragg光栅(FBG)串联复用结构传感器的解复用数学模型,分析了串联复用中FBG与F-P腔光谱的叠加对各自解调的影响,得到了分离FBG与F-P腔光谱的方法,从而实现双参数测量高精度解调的目的,并采用基于扫描激光器的波长查询系统验证了该方法的有效性。实验结果表明,该解调方法可以消除串联复用时光纤F-P腔与FBG间的交叉干扰,光纤F-P腔的解调数据最大离散值小于0.2nm,FBG峰值反射波长测量数据最大离散值小于0.7pm。
An accurate de-multiplexing mathematical model is established for optical fiber Fabry-Perot(F-P)cavity and Fiber Bragg Grating(FBG)multiplexed sensor.The spectral characteristic of the sensor is analyzed and a new mechanism to separate FBG spectrum from F-P cavity spectrum is proposed.with a swept laser based wave length interrogator,the experimental results demonstrate that the cross interference between F-P sensor spectrum and FBG sensor spectrum is clearly eliminated,and the resolution of the sensor syst...
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2009年第8期1008-1011,共4页
Journal of Optoelectronics·Laser
基金
国家自然科学基金资助项目(60677010)
辽宁省高校重点实验室基金资助项目(2008S046)
