Calibration Method for Fiber Bragg Grating Temperature Sensor

摘要：

A successful nonlinear calibration method for fiber Bragg grating (FBG) temperature sensor system based on wavelength-division multiplexing was proposed and demonstrated theoretically and experimentally. In consideration of the nonlinear relation between FBG center wavelength and temperature due to thermal expansion and thermo-optic effect,linear and nonlinear curve fittings were used to evaluate the measurement errors in data processing respectively,measurement errors were calculated. As a result,the maximum error is reduced from 0.15℃to 0.08℃when the temperature is in the range-5℃ to 35℃ . Experimental result shows that nonlinear calibration method achieved a higher precision.

关键词： Bragg Grating Sensor curve fitting thermal ezpansion coefficient thermo-optic effect

作者: Jing Zhang Yongqian Li

作者单位: Department of Electronics and communication engineering,North China Electric Power University Baoding 071003,China

会议类型: 国际会议

会议名称: 2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)

会议地点: 北京

会议语种:英文

页码: 1899-1902

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）