基于FBGA光纤光栅解调系统的实时校准方法  

Real-time calibration technique of fiber Bragg grating demodulation system based on FBGA

作　　者：张登攀[1] 王瑨[1,2] 王永杰[2] 

机构地区：[1]河南理工大学机械与动力工程学院,河南焦作454000 [2]中国科学院半导体研究所,北京100083

出　　处：《激光与红外》2015年第7期825-829,共5页Laser & Infrared

基　　金：国家自然科学基金(No.41276094);中国科学院战略性先导科技专项A(No.XDA110-40201)项目资助

摘　　要：针对海洋仪器高精度、大范围、快速的测温需求,提出基于FBGA(Fiber Bragg Grating Analyzer)的光纤光栅解调方法,并针对其自身温漂现象提出一种基于F-P标准具的波长实时校准方法,进而减小系统误差,提高系统测试精度。通过对系统整体测试,引用实验数据具体说明采用提出的方法可使系统测温重复性绝对误差保持在±0.1℃以内,具有与MOI系统(Micron Optics)相当的解调精度。采用本方法的解调系统具有优良的测试特性,同时小型化、低成本的优势使其更具有实用价值。Aiming at the requirement of high-precision large-scale fast-response temperature measurement of ocean instruments,a new demodulation method of fiber Bragg grating（ FBG） based on FBGA（ Fiber Bragg Grating Analyzer）is presented. To solve the problem of system temperature drift,a real-time calibration technology based on F-P etalon is proposed,which can reduce system errors and improve test precision of the system. Through testing the system and analyzing experimental data,the absolute error of temperature measurement repeatability can keep within ± 0. 1 ℃ by adopting this method,and its demodulation precision can also match that of MOI（ Micron Optics）. This system has excellent testing characteristics and advantages of miniaturization and low cost,which has much practical value.

关 键 词：光纤光栅 FBGA 实时校准 海洋温度 

分 类 号：TP21[自动化与计算机技术—检测技术与自动化装置]