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17 May 2011 Launching the excitation light to a taper externally: comprehensive performance improvement of fiber-optic evanescent-wave sensor
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Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 775354 (2011) https://doi.org/10.1117/12.884737
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada
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.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Huacai Chen, Jianjun Ma, and Wojtek J. Bock "Launching the excitation light to a taper externally: comprehensive performance improvement of fiber-optic evanescent-wave sensor", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 775354 (17 May 2011); https://doi.org/10.1117/12.884737
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