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Proceedings Paper

Miniature photonic crystal optical fiber humidity sensor based on polyvinyl alcohol
Author(s): Wei Chang Wong; Chi Chiu Chan; Tao Li; Li Han Chen; Jia Liang Boo; Kok Xian Lee; Kam Chew Leong
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Paper Abstract

A compact photonic crystal fiber (PCF) humidity sensor based on modal interference has been proposed by the use of commercial fusion splicer to collapse the holes of PCF to form a Michelson interferometer with cladding mode excitation at the fiber tip. The sensor is then dipped coated in polyvinyl alcohol to make it sensitive to humidity. The shift of the interference fringes was measured when the sensor was placed in a humidity chamber of varying humidity. High sensitivity was obtained when the relative humidity is above 50% RH as an exponential relation of relative humidity and interference shift was established.

Paper Details

Date Published: 7 November 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84216C (7 November 2012); doi: 10.1117/12.975104
Show Author Affiliations
Wei Chang Wong, Nanyang Technological Univ. (Singapore)
Chi Chiu Chan, Nanyang Technological Univ. (Singapore)
Tao Li, China Jiliang Univ. (China)
Li Han Chen, Nanyang Technological Univ. (Singapore)
Jia Liang Boo, Nanyang Technological Univ. (Singapore)
Kok Xian Lee, Nanyang Technological Univ. (Singapore)
Kam Chew Leong, GLOBALFOUNDRIES Singapore Pte Ltd. (Singapore)


Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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