A Novel Fiber Bragg Grating Temperature Compensated Strain Sensor
This paper analyzed the strain-temperature crosssensitive characteristic of optical fiber Bragg grating(FBG)theoretically,designed and made a novel FBG strain sensor.It has a temperature-compensated function,and it improves the effect of being sensitive to strain.To a certain extent,this sensor overcame the traditional temperature-compensated methods easy to have a creep and aged phenomenon.The experimental results show that the sensor realized the temperature sensitivity reduces to 1/10 before the seal,and the strain sensitivity increases to 1.4pm/με over the temperature range from -10℃ to 50℃.
fiber Bragg grating temperature-compensated Strain Negative coefficient of thermal expansion
Du Yanliang Li Jianzhi Liu Chenxi
Key laboratory of Structural Health Monitoring and Control ,Shijiazhuang railway institute,shijiazhuang 050043
国际会议
武汉
英文
2008-11-01(万方平台首次上网日期,不代表论文的发表时间)