期刊
IEEE PHOTONICS TECHNOLOGY LETTERS
卷 27, 期 24, 页码 2591-2594出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2015.2478790
关键词
Optical fiber; interferometric sensors; temperature measurement
A simple-to-fabricate and highly sensitive optical fiber temperature sensor is presented. The device consists of an optical microfiber mode interferometer embedded in a polymer with high thermo-optic coefficient which is also used as a packaging material. Temperature modifies the refractive index of the polymer, hence the phase difference between the interfering modes, which results in a prominent wavelength shift of the interference pattern. The sensor was tested in the 20 degrees C-48 degrees C range. The temperature sensitivity was found to be 3101.8 pm/degrees C. The simplicity and the performance of our device make it attractive for several applications.
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