High-sensitivity temperature sensor based on an alcohol-filled photonic crystal fiber loop mirror
Wenwen Qian(China Jiliang University), Chunliu Zhao(China Jiliang University), Shaoling He(China Jiliang University), Xinyong Dong(China Jiliang University), Shuqin Zhang(China Jiliang University), Zaixuan Zhang(China Jiliang University), Shangzhong Jin(China Jiliang University), Jiangtao Guo(Yangtze Optical Electronic (China)), Huifeng Wei(Yangtze Optical Electronic (China))
Cited by 261
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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