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Proceedings Paper

Enhanced novel fiber-optic sensor for efficient fluorescence collection
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Paper Abstract

In this article the enhancement of the novel fiber-optic fluorescent sensor is demonstrated. The novel sensor that was developed by our group is based on the collection of the fluorescence from the sidewall of the multimode optical fiber which is partly de-cladded and covered by the sample under the test (SUT). The most part of the fluorescent intensity is carried by the leaky rays which are inaccessible in traditional evanescent-wave fluorescence fiber sensors. In our previous structure, some part of a refracting power is collected in the de-cladded segment and used to excite the lower order lossless modes in the cladded part by an end-face mode-mixer. In the enhanced type of our sensor we discovered that the mode-mixer on the side-wall, rather than on the end-face, is more efficient. The fluorescence efficiency increased in this type of enhanced sensor by about 88%. Moreover, the capability of multiplexing of the different SUT on one fiber is a promising advantage of this architecture with a view to develop the multi-channel chemical detection system with inexpensive simple fiber-optic.

Paper Details

Date Published: 7 November 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84216P (7 November 2012); doi: 10.1117/12.976883
Show Author Affiliations
Yasser Chiniforooshan, Univ. du Québec en Outaouais (Canada)
Jianjun Ma, Univ. du Québec en Outaouais (Canada)
Wojtek J. Bock, Univ. du Québec en Outaouais (Canada)

Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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