一种准分布式光纤光栅传感实验仪的设计  

Design of a Novel Experimental Instrument for Quasi-Distributed Fiber Bragg Grating Sensing

作　　者：李学军[1] 蒋玲莉[1] 宾光富[1] 

机构地区：[1]湖南科技大学机械设备健康维护省重点实验室,湖南湘潭411201

出　　处：《电子测量与仪器学报》2008年第1期67-71,共5页Journal of Electronic Measurement and Instrumentation

基　　金：湖南省火炬计划资助项目(编号:2005EB1048)

摘　　要：本文设计的实验仪采用FBG应变传感原理、准分布式技术和匹配光栅解调法,克服了现有同类仪器相对缺乏且多为单点测量的不足。本设计采用结构相同的双悬臂梁分别作为传感与解调机构,应变的模拟与测试在仪器内部即可实现。该实验仪可完成FBG准分布式实验教学,作为相关课程的教学实验设备;亦可用作解调仪对外界匹配光栅的传感量进行解调。Based on the sensing principle of fiber Bragg grating （FBG） for strain measurement, quasi-distributed technology of FBG sensors and technique of matched FBG demodulation, a novel experimental instrument for quasi-distributed FBG sensing was designed, which overcomes the limitation of single point measurement of FBG sensors. The experimental instrument adopts double unique matched cantilever beams as sensing and demodulation mechanisms respectively, which can carry out the acquisition and demodulation of the strain data. The designed instrument satisfies the need for an effective tool in quasi-distributed fiber sensing teaching and is better than other similar products. The instrument not only can be employed in related course teaching but also can be used as a wavelength readout system to demodulate other matched FBG outside the instrument.

关 键 词：双悬臂梁 准分布式 光纤光栅 匹配光纤光栅解调 

分 类 号：TN247[电子电信—物理电子学] TH74[机械工程—光学工程]