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Title: Chitosan based fiber-optic Fabry–Perot humidity sensor
Authors: Chen, Li Han
Li, Tao
Chan, Chi Chiu
Menon, R
Balamurali, Papusamy
Shaillender, Mutukumaraswamy
Neu, Björn
Ang, Xiu Min
Zu, Peng
Wong, Wei Chang
Leong, Kam Chew
Keywords: DRNTU::Engineering::Chemical engineering
Issue Date: 2012
Source: Chen, L. H., Li, T., Chan, C. C., Menon, R., Balamurali, P., Shaillender, M., et al. (2012). Chitosan based fiber-optic Fabry–Perot humidity sensor. Sensors and actuators B : chemical, 169, 167-172.
Series/Report no.: Sensors and actuators B : chemical
Abstract: A relative humidity fiber sensor based on Fabry–Perot interferometry configuration is presented. The proposed fiber sensor is functionalized with a thin layer of a moisture-sensitive natural polymer chitosan to form a low fineness Fabry–Perot sensor. The sensing scheme used in this work is based on the swelling effect of chitosan sensing film (degree of swelling varies as a function of relative humidity) which will induce optical path modulation when relative humidity is changed. As observed, the proposed sensor exhibits a sensitivity of 0.13 nm/%RH for relative humidity ranging from 20%RH to 95%RH with a RH uncertainty of ±1.68%RH and fast response time of 380 ms.
ISSN: 0925-4005
DOI: 10.1016/j.snb.2012.04.052
Rights: © 2012 Elsevier B.V.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SCBE Journal Articles

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