结构调制型长周期光纤光栅温度传感器研究  

Study on Structurally Modulated Long-period Fiber Grating Temperature Sensor

作　　者：李媛媛 田甜 陈文焕 马一巍 赵磊[2] 耿涛 Li Yuanyuan;Tian Tian;Chen Wenhuan;Ma Yiwei;Zhao Lei;Geng Tao(Key Laboratory of In-Fiber Integrated Optics of Ministry of Education,Harbin Engineering University,Harbin 150000,China;AVIC Xi’an Flight Automatic Control Research Institute,Xi’an 710065,China)

机构地区：[1]哈尔滨工程大学纤维集成光学教育部重点实验室,黑龙江哈尔滨150001 [2]航空工业西安飞行自动控制研究所,陕西西安710065

出　　处：《航空科学技术》2024年第4期67-73,共7页Aeronautical Science & Technology

基　　金：航空科学基金(201608P6003)。

摘　　要：燃油系统的温度监测对于飞行器的安全、性能和可靠性至关重要。本文提出并测试了一种基于激光蚀刻法在保偏光纤上制备的长周期光纤光栅温度传感器,有望用于飞机内部液体温度监测。通过解调该种光纤光栅谐振峰的波长变化,可以实现对环境温度的精准测量。试验结果表明,该传感器具有83.1pm/℃的温度灵敏度和0.32 pm/με的低应变响应。由于光纤具有耐腐蚀、抗电磁干扰,不易产生电火花等特性,在替代电学传感器使用时可以提升飞行器的安全性。The temperature monitoring of fuel system is very important for the safety,performance and reliability of aircraft.In this paper,a long-period fiber grating sensor based on laser etching method is proposed and tested,which can be used for temperature monitoring of aircraft fuel system.By demodulating the resonant peak wavelength variation of fiber grating,the precise measurement of ambient temperature can be realized.Experimental results show that this sensor has a temperature sensitivity of 83.1pm/℃and achieves a strain response of 0.32pm/με.Due to the characteristics of flexibility,corrosion resistance and electromagnetic interference resistance for the optical fibers,the proposed sensor can be flexibly installed in the complex structure of the aircraft,which has the ability to improve the safety and reliability of the aircraft.

关 键 词：光纤传感 温度监测 保偏光纤 长周期光纤光栅 

分 类 号：V219[航空宇航科学与技术—航空宇航推进理论与工程]