Experimental research of temperature sensor based on twin-core fiber |
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| Authors: | Ruifeng Zhao Li Pei Zhuoxuan Li Tigang Ning Linyong Fan and Weiwei Jiang |
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| Institution: | 1 , 2 1 Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China 2 Key Laboratory of All Optical Network and Advanced Telecommunication Network of Ministry of Education, Beijing Jiaotong University, Beijing 100044, China |
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| Abstract: | A low-cost, compact, and lossless temperature sensor based on a twin-core fiber (TCF) is demonstrated and manufactured by splicing two single-mode fibers to the ends of a TCF. The extinction ratio of the comb transmission spectrum is bigger than 15 dB, and the temperature sensitivity of the coupling angle is –0.02 rad/(°C· m) at–30–90°C and –0.032 rad/(°C· m) at 90–175°C. Finite element method is used to calculate the supermodes of the TCF, and the result agrees well with the experiment. |
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