红外技术2016，Vol.38Issue(11)：920-923,968,5.
啁啾型FBG温度测试系统的设计与实现
Design and Implementation of Chirped FBG Temperature Test System
摘要
Abstract
In order to achieve long-distance, large-scale, real time temperature monitoring, temperature detection system was designed based on chirped fiber Bragg grating for more FBG sensor integrated on a single optical fiber. The functional relationship of Raster size, chirp factor and grating period was calculated. Modulation mode and modulation range was designed. In the experiment, the system was composed of a broadband light source, fiber optic, coupler, FBG detector and F-P demodulator, and so on. Its modulation range was 1530.0-1550.0nm. The temperature was tested by system within 15℃-55℃. Temperature results were compared with WR-220 type temperature detector. The results show that the temperature test results were basically the same by the uniformity FBG and chirped FBG, and its accuracy can meet the design requirements. However, the echo bandwidth was wider, and modulation capability was stronger by the system using chirped FBG. In a single fiber, the amount of loaded FBG detectors can be more than three times to which of uniform type FBG system. The design of system can significantly improve the ability of temperature detection without additional hardware, which has a good practicability.关键词
光纤布拉格光栅/啁啾调制/波分复用/温度测试Key words
fiber Bragg grating/chirp modulation/wavelength division multiplexed (WDM)/temperature test分类
信息技术与安全科学引用本文复制引用
孙琪,徐子奇,刘智超,王美娇..啁啾型FBG温度测试系统的设计与实现[J].红外技术,2016,38(11):920-923,968,5.基金项目
国家自然科学基金(60637010) （60637010）
吉林省教育厅"十二五"科学技术研究规划项目:基于光纤布拉格光栅网络的粮仓温度监测系统(吉教科[2014]B060). （吉教科[2014]B060）
