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Proceedings Paper

Dual biconical fiber humidity sensor at 2um
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Paper Abstract

This paper studies a humidity dual biconical fiber sensor coated with agarose gel. The sensor was fabricated by the taper drawing technique of using a LZM-100 fusion splicer from single mode fiber, forming a Mach-Zehnder interferometer. Humidity modifies the refractive index of the coating layer, which in turn alters the high order modes along the dual biconical fiber segment and causes a detectable shift to the interference pattern. Due to the strong light absorption of agarose at 2 μm, the sensitivity of sensor was greatly enhanced. It has been found that the sensor’s sensitivity operated at 2 μm is tens of times higher than that at 1.55 μm region.

Paper Details

Date Published: 23 October 2018
PDF: 6 pages
Proc. SPIE 10821, Advanced Sensor Systems and Applications VIII, 1082109 (23 October 2018); doi: 10.1117/12.2500042
Show Author Affiliations
Weijuan Chen, Quanzhou Normal Univ. (China)
Fujian Normal Univ. (China)
Zhihao Chen, Quanzhou Normal Univ. (China)
Yi Zhang, Quanzhou Normal Univ. (China)
Huibin Chen, Quanzhou Normal Univ. (China)
Hui Li, Fujian Normal Univ. (China)
Yanhui Lian, PhotonicFujian Gui Comm-Tech Co. Ltd. (China)


Published in SPIE Proceedings Vol. 10821:
Advanced Sensor Systems and Applications VIII
Tiegen Liu; Shibin Jiang, Editor(s)

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