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Proceedings Paper

Highly sensitive and selective optical fiber fluorescence sensor for lead ion detection in water using corrugated long period fiber grating
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Paper Abstract

Optical fiber fluorescence sensors are widely used for chemical sensing. Intrinsic fluorescence sensors such as evanescent-wave sensors can be used for surface sensing while extrinsic sensors are used for bulk sensing. In intrinsic/ extrinsic fluorescence sensors, typically the side-wall/end-face of a single/multi-mode fiber is used. In this paper we introduce a novel intrinsic optical fiber fluorescence sensor which uses the side-wall of a large-core multi-mode fiber to collect the fluorescence from the bulk of samples. The method is to use a corrugated long period fiber grating, fabricated by a CO2 laser, to couple radiating modes to the core modes. Using the side-wall of a fiber helps to fabricate a multitarget or a distributed sensor. We also report the sensing of lead ions with concentration as low as few ppb in water using a novel fluorescence turn-on polymer as a chemical probe.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91575C (2 June 2014); doi: 10.1117/12.2059737
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)
Wenhui Hao, Carleton Univ. (Canada)
Zhi Yuan Wang, Carleton Univ. (Canada)
Changchun Institute of Applied Chemistry (China)

Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

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