Experimental Research of Strain and Temperature Based on EFPI Sensor
An extrinsic Fabry-Perot (F-P) interferometric (EFPI) sensor by using simple etching and fusing method is proposed and demonstrated. The cavity is formed by wet chemical etching of multi-mode fiber (MMF) end face in hydrofluoric acid solutions, and then it is fused to the end of a single-mode fiber (SMF) to form an extrinsic F-P structure. The strain and temperature of EFPI sensor are studied experimentally. The experimental results show that the interference wavelength becomes 2.648nm longer while the strain increases from ON to 637N, and the strain sensitivity is about 0.004nm/N, and linearity is 0.999. The interference wavelength becomes 0.032nm shorter while the temperature increases from 20 ℃ to 100°C. This kind of sensor has the many advantages of easy fabrication, good reliability, high-repetition, small size, low cost and mass-production, which offers great prospect for sensing applications.
Fabry-Perot Cavity Etch Strain Temperature
Xiu-feng Yang Chun-yu Zhang Zheng-rong Tong
School of electronics information Engineering, Tianjin University of Technology, Tianjin 300384, Chi School of Computer and Communication Engineering, Tianjin University of Technology, Tianjin 300384,
国际会议
合肥
英文
4185-4188
2011-09-23（万方平台首次上网日期，不代表论文的发表时间）