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Proceedings Paper

Lab-on-a-fiber: building a fiber optic sensing platform for low-cost and high-performance trace vapor TNT detection
Author(s): Jianjun Ma; Aldona Kos; Wojtek J. Bock; Xianzhe Li; Huy Nguyen; Zhi Yuan Wang; Andrea Cusano
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Paper Abstract

By depositing an amplifying fluorescent polymer (AFP) directly onto the core side wall of an optical fiber near the fiber tip, a functional fiber-optic sensing platform is created at a scale of a mere 0.8×0.8×1.6 mm3, including the second fiber tip for excitation light delivery. The device integrates several functional optical components, a chemical sensory film and the necessary laboratory procedures on a minute scale. Here the Lab-on-a-Fiber (LOF) platform is conceptually introduced and proven to be a high-performance and low-cost approach to detection of trace vapors of TNT explosives. The low-cost potential is achieved by straightforward system construction and simple procedures for the AFP film deposition. The high performance is achieved by a dramatic increase of fluorescence emission signal collection, virtually complete suppression of excitation stray light and the fast response to the presence of TNT vapor, which is illustrated by 30% of quenching percentage occurring within 10 seconds.

Paper Details

Date Published: 9 September 2010
PDF: 4 pages
Proc. SPIE 7653, Fourth European Workshop on Optical Fibre Sensors, 76531E (9 September 2010); doi: 10.1117/12.865080
Show Author Affiliations
Jianjun Ma, Univ. du Québec en Outaouais (Canada)
Aldona Kos, Univ. du Québec en Outaouais (Canada)
Wojtek J. Bock, Univ. du Québec en Outaouais (Canada)
Xianzhe Li, Carleton Univ. (Canada)
Huy Nguyen, Carleton Univ. (Canada)
Zhi Yuan Wang, Carleton Univ. (Canada)
Andrea Cusano, Univ. degli Studi del Sannio (Italy)


Published in SPIE Proceedings Vol. 7653:
Fourth European Workshop on Optical Fibre Sensors
José Luís Santos; Brian Culshaw; José Miguel López-Higuera; William N. MacPherson, Editor(s)

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