期刊
OPTICS LETTERS
卷 37, 期 5, 页码 863-865出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.37.000863
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资金
- National 973 program [2011CBA00200, 2012CB921803, 2010CB327803]
- National Natural Science Foundation of China [11074117, 60977039]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- Natural Science Foundation of Jiangsu Province, China [BK2010247]
We fabricate a simple, compact, and stable temperature sensor based on a liquid-sealed photonic crystal fiber (PCF) in-line nonpolarimetric modal interferometer. Different from other reported PCF devices, it does not need expensive polarimetric devices, and the liquid is sealed in one fiber. The device consists of a stub of isopropanol-filled PCF spliced between standard single-mode fibers. The temperature sensitivity (-166 pm/degrees C) increases over an order of magnitude compared with those of the previous sensors based on air-sealed PCF interferometers built via fusion splicing with the same mechanism. In addition, the refractive index sensitivity also increases. Higher temperature sensitivity can be realized by infiltrating some liquid having a higher thermo-optic coefficient into the microholes of the PCF. (C) 2012 Optical Society of America
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