High-sensitivity temperature sensor based on an alcohol-filled photonic crystal fiber loop mirror |
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| Authors: | Qian Wenwen Zhao Chun-Liu He Shaoling Dong Xinyong Zhang Shuqin Zhang Zaixuan Jin Shangzhong Guo Jiangtao Wei Huifeng |
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| Institution: | Institute of Optoelectronic Technology, China Jiliang University, Hangzhou 310018, China. |
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| Abstract: | A compact temperature sensor based on a fiber loop mirror (FLM) combined with an alcohol-filled high-birefringence photonic crystal fiber (PCF) is proposed and experimentally demonstrated. The output of the FLM is an interference spectrum with many resonant dips, of which the wavelengths are quite sensitive to the change of the refractive index of the filled alcohol for the interference of the FLM. Simulation analysis predicts a high temperature sensitivity, and experimental results show it reaches up to 6.6 nm/°C for the 6.1-cm-long PCF used in the FLM. |
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