期刊
OPTICS COMMUNICATIONS
卷 308, 期 -, 页码 11-14出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2013.06.018
关键词
Multipoint sensing; Humidity sensors; Multimode-fiber tapers; Arrayed-waveguide grating
类别
资金
- National Natural Science Foundation of China [61108058]
- National Basic Research Program of China (973 program) [2010CB327804]
- National Key Technology RD Program [2011BAF06B02]
- Science and Technology Commission of Shanghai Municipality of China [10595812300]
A simple multiplexing method for relative humidity (RH) sensors based on multimode-fiber tapers (MFTs) is proposed and demonstrated. By cascading a polyvinyl alcohol (PVA) coated MET with every channel of an Arrayed-Waveguide Grating (AWG), multipoint RH measurement is achieved. Experimental results show that the proposed multipoint RH sensor system works well. The output power for every sensor head is almost linearly increased with the RH, and the average sensitivity of the proposed sensor is about 0.23 nW/%RH within the measurement range of 35%RH-90%RH with the taper waist diameter of similar to 22 mu m. (C) 2013 Elsevier B.V. All rights reserved.
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