Chinese Optics Letters, 2015, 13 (5): 050603, Published Online: Sep. 20, 2018
Hybrid fiber interferometer for simultaneous measurement of displacement and temperature Download: 876次
060.0060 Fiber optics and optical communications 060.2310 Fiber optics 060.2370 Fiber optics sensors
Abstract
A hybrid fiber interferometer sensing configuration for displacement and temperature measurements is proposed and experimentally demonstrated that is constructed by splicing a short section of polarization maintaining optical fiber to an end-cleaved single mode optical fiber with a tapering structure. The reflected spectrum changes with the variation of displacement and temperature. The sensing configuration uses the method of wavelength and intensity modulations for displacement and temperature measurements, respectively, to which the sensitivities are 0.01392 nm/μm, 0.0214 dBm/μm, 0.09136 nm / ° C , and 0.15795 dBm/°C. Experimental results show that displacement and temperature can be measured simultaneously by demodulating the reflected spectrum.
Fei Meng, Zhongbao Qin, Qiangzhou Rong, Hao Sun, Jiacheng Li, Zaihang Yang, Manli Hu, Honggao Geng. Hybrid fiber interferometer for simultaneous measurement of displacement and temperature[J]. Chinese Optics Letters, 2015, 13(5): 050603.