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
李媛媛 1田甜 1陈文焕 1马一巍 1赵磊 2耿涛1
作者信息
- 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
- 折叠
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.
Abstract
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Key words
optical fiber sensing/temperature monitoring/polarization-maintaining fiber/long-period fiber grating引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据