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Proceedings Paper

Experimental study on the durability of dielectric-coated silver hollow fibers for corrosive gas sensing
Author(s): Wen-Qing Shao; Qing-Yun Chen; Bang-Shan Sun; Xiao-Xu Wu; Yi-Wei Shi
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Paper Abstract

The possibility of spectroscopic gas sensing using infrared hollow fiber as the absorption cell was demonstrated. By optimizing the coating dielectric material and fiber structure parameters, hollow fiber obtains low-loss property at the absorption wavelength band of various gases. Using low-loss infrared hollow fiber as the gas absorption cell has the potential advantages of miniaturization, high sensitivity, small gas sample volume, and thus rapid response. Several kinds of dielectric-coated silver hollow fibers were fabricated and tested for corrosive gas sensing. The durability of the fibers, with inner coating film of silver and silver iodide (AgI), cyclic olefin polymer (COP), SiO2, polycarbonate (PC), as well as Ag tube were discussed experimentally. We used NH3, HCl, and ammonia, hydrochloric acid as the corrosive gas or liquid. By flowing the corrosive material through the hollow fiber, durability of the fiber on these corrosives were measured. Experimental results showed that AgI/Ag and COP/Ag hollow fiber have high durability.

Paper Details

Date Published: 24 February 2010
PDF: 8 pages
Proc. SPIE 7559, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications X, 75590F (24 February 2010); doi: 10.1117/12.841953
Show Author Affiliations
Wen-Qing Shao, Fudan Univ. (China)
Qing-Yun Chen, Fudan Univ. (China)
Bang-Shan Sun, Fudan Univ. (China)
Xiao-Xu Wu, Fudan Univ. (China)
Yi-Wei Shi, Fudan Univ. (China)


Published in SPIE Proceedings Vol. 7559:
Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications X
Israel Gannot, Editor(s)

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