29 November 2011 An optical fiber humidity sensor based on optical absorption
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Proceedings Volume 8311, Optical Sensors and Biophotonics III; 83112A (2011) https://doi.org/10.1117/12.904443
Event: SPIE/OSA/IEEE Asia Communications and Photonics, 2011, Shanghai, China
Abstract
A simple optical fiber relative humidity (RH) sensor was proposed and demonstrated. The humidity sensor was fabricated by coating moisture-sensitive film on the end face of a multi-mode optical fiber. The film was synthesized by doping CoCl2 into a PVA/SiO2 composite solution. Based on an optical absorption technique, the sensor head was characterized. From the optical absorption, a relative humidity range of 25%~65% was detected. Furthermore, the sensor has good repetitive response, and the response time was less than 2 min.
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Biao Wang, Fujun Zhang, Fufei Pang, Tingyun Wang, "An optical fiber humidity sensor based on optical absorption", Proc. SPIE 8311, Optical Sensors and Biophotonics III, 83112A (29 November 2011); doi: 10.1117/12.904443; https://doi.org/10.1117/12.904443
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