Please use this identifier to cite or link to this item:
https://hdl.handle.net/10356/97840
Title: | Polyvinyl alcohol coated photonic crystal optical fiber sensor for humidity measurement | Authors: | Wong, Wei Chang Chan, Chi Chiu Chen, Li Han Li, Tao Lee, Kok Xian Leong, Kam Chew |
Keywords: | DRNTU::Engineering::Chemical engineering | Issue Date: | 2012 | Source: | Wong, W. C., Chan, C. C., Chen, L. H., Li, T., Lee, K. X., & Leong, K. C. (2012). Polyvinyl alcohol coated photonic crystal optical fiber sensor for humidity measurement. Sensors and Actuators B: Chemical, 174, 563-569. | Series/Report no.: | Sensors and actuators B: chemical | Abstract: | A polyvinyl alcohol (PVA) coated photonic crystal optical fiber (PCF) sensor has been proposed as a relative humidity (RH) sensor. It was fabricated by collapsing the holes of PCF at both ends to form a Michelson interferometer with cladding mode excitation. PVA was dip coated onto the sensor and the interference shift was measured when the sensor was exposed to varying RH. The sensor with 9% (w/w) coating showed a high sensitivity of 0.60 nm/%RH, displayed little hysteresis, high repeatability, low cross-sensitivity to temperature and ammonia gas and stability over 7 days of testing. A rise/fall time of 300/500 ms was achieved respectively. | URI: | https://hdl.handle.net/10356/97840 http://hdl.handle.net/10220/12104 |
ISSN: | 0925-4005 | DOI: | 10.1016/j.snb.2012.07.032 | Rights: | © 2012 Elsevier B.V. | Fulltext Permission: | none | Fulltext Availability: | No Fulltext |
Appears in Collections: | SCBE Journal Articles |
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