Journal
ADVANCES IN MATERIALS SCIENCE AND ENGINEERING
Volume 2013, Issue -, Pages -Publisher
HINDAWI LTD
DOI: 10.1155/2013/815930
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Funding
- National Basic Research Program of China (973 Program) [2010CB327804]
- National Natural Science Foundation of China [61007050, 61007051]
- National Natural Science Foundation of Zhejiang Province, China [Z13F050003]
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A novel relative humidity (RH) sensor based on a microfiber loop resonator (MLR) is proposed and experimentally demonstrated. As refractive index of the microfiber in the MLR is modified by environmental humidity, resonant wavelength of the MLR changes with RH level. By detecting this wavelength shift, RH measurement is realized with a linear response sensitivity of 1.8 pm/% RH. The obvious advantage of this technique over others is that no coating of humidity-sensitive material is required.
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