期刊
IEEE SENSORS JOURNAL
卷 13, 期 6, 页码 2214-2216出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2012.2234100
关键词
Humidity sensors; interferometers; photonic crystal fibers; polyvinyl alcohol
资金
- National Basic Research Program of China (973 Program) [2010CB327804]
A photonic crystal fiber (PCF)-model interferometer (MI)-based relative humidity (RH) sensor is proposed and experimentally demonstrated. The PCF-MI is formed by fusion splicing a short length of PCF between two single-mode fibers with the air holes of the PCF in the splicing regions being fully collapsed. It was then coated with a layer of polyvinyl alcohol by using a dip-coating process. Experimental results show that a high humidity sensitivity of 40.9 pm/% RH is achieved within a measurement range of 20-95% RH. The sensor also shows good repeatability and low temperature independence.
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