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Proceedings Paper

Launching the excitation light to a taper externally: comprehensive performance improvement of fiber-optic evanescent-wave sensor
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Paper Abstract

A taper at one end of the fiber serving as the sensing element is widely used to enhance the performance of evanescentwave (EW) fiber-optic sensors. However, almost all sensors of this type launch the excitation light into the core at the opposite end and the entire taper has to be immersed into the bulky sample volume. This paper introduces a new way of injecting excitation light: from the outside of the taper perpendicularly. As a result, several desirable features are achieved simultaneously, including a dramatic increase of collectable EW signal, elimination of stray excitation light, easy system construction and reduction of the sample volume to mere microliters.

Paper Details

Date Published: 17 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 775354 (17 May 2011); doi: 10.1117/12.884737
Show Author Affiliations
Huacai Chen, China Jiliang Univ. (China)
Jianjun Ma, Univ. du Québec en Outaouais (Canada)
Wojtek J. Bock, Univ. du Québec en Outaouais (Canada)

Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors
Jacques Albert; Wojtek J. Bock, Editor(s)

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