5 October 2009 Miniature fiber-optic temperature sensors based on silica/polymer microfiber knot resonators
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Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 750359 (2009) https://doi.org/10.1117/12.835313
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom
Abstract
In this paper, we report two novel fiber-optic temperature sensors based on silica/polymer microfiber knot resonators (SMKR/PMKR). These microfiber knots form the resonators by evanescent self-coupling in the overlap region. The connections between the microfibers and the launching fiber as well as collecting fiber were also realized by evanescent coupling. Experimental results show that the temperature sensitivity of SMKR is ~52pm/°C within 30°C~700°C, which can be used as a high temperature sensor, while the sensitivity of PMKR is ~266pm/°C within 20°C~80°C. The actual temperature resolutions of as small as 0.05°C and 0.009°C for the SMKR and PMKR sensors were obtained, respectively. Higher resolution can be anticipated due to further improvement of the Q factor of the microfiber knot resonators.
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Yu Wu, Yun-Jiang Rao, Yi-Huai Chen, "Miniature fiber-optic temperature sensors based on silica/polymer microfiber knot resonators", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 750359 (5 October 2009); doi: 10.1117/12.835313; https://doi.org/10.1117/12.835313
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