300m optic fiber Bragg grating temperature sensing system for seawater measurement
Optic fiber grating sensor is a research hotspot.lt has been used on many occasions,and how to use it for ocean detection is a new research directions. The paper introduced the calibration work of FBG temperature sensors. It confirmed that from being armored package,the sensors can eliminate the water pressure effect From the calibration experiment and data processing,60 sensors has little error were screened out for experiment. 300m long optic fiber Bragg grating sensor array was designed.The marine experiments were achived in South China Sea with 300 meters long Bragg grating array and got the seawater profile temperature. Proposed the curve fitting method to process the data based on Levenberg-Marquardt algorithm.By curve fitting to the data acquired,the precision was better than 0.2℃,which verified the effectiveness of the method.This result has practical value.
optic fiber grating sensing system calibration experiment curve fitting
Xingrong LI Yongqian Li Zhengyang Wen
Dept of Electronics and Communication Engineering, North China Electric Power University, Baoding 071003 ,China
国际会议
3rd International Photonics & OptoElectronics Meetings(第三届国际光子与光电子学会议 POEM 2010)
武汉
英文
1-8
2010-11-03（万方平台首次上网日期，不代表论文的发表时间）