基于光纤光栅F-P腔的一种新颖传感系统的理论研究  

Theoretical Studies on a Novel Sensor System with Fiber Grating Fabry-Perot Cavity

作　　者：李家方[1] 吕可诚[1] 韩群[1] 陈胜平[1] 李乙钢[1] 巩宪锋[1] 郭转运[1] 

机构地区：[1]南开大学物理学院光电信息科学系,天津300071

出　　处：《光电子技术》2004年第1期21-26,31,共7页Optoelectronic Technology

基　　金：国家高技术研究发展计划项目 ( No.2 0 0 3 AA3 1 2 1 0 0 ) ;国家自然科学基金项目 ( No.60 3 770 1 0 ;60 1 3 70 1 0 )

摘　　要：在对光纤光栅 F- P腔的反射光谱特性进行理论分析的基础上 ,提出了一种基于弱反射率、长腔长光纤光栅 F- P腔的新颖的传感系统 ,分析了两种适用于该系统的有效解调方法。讨论了系统参数对传感器性能的影响和系统的优化设计原则。理论研究表明 ,这种新颖的传感系统可实现温度的精确测量 ,具有很高的可靠性。Based on the studies of reflection spectrum characteristics of fiber grating Fabry-Perot cavity, a novel sensor system with two low-reflectance fiber Bragg gratings and a long Fabry-Perot cavity is proposed. Two kinds of reliable methods designed for this novel system are theoretically analyzed. Influences of parameters on the performance of this new system and improved plans have been analyzed. Theoretical studies reveal that, with this sensor system, temperature measurement with high resolution can be achieved and its reliability is very good.

关 键 词：光纤光栅 F-P腔 弱反射率 传感系统 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TN253[自动化与计算机技术—控制科学与工程]