Lab-on-a-fiber: building a fiber optic sensing platform for low-cost and high-performance trace vapor TNT detection

Jianjun Ma; Aldona Kos; Wojtek J. Bock; Xianzhe Li; Huy Nguyen; Zhi Yuan Wang; Andrea Cusano

doi:10.1117/12.865080

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8 September 2010 Lab-on-a-fiber: building a fiber optic sensing platform for low-cost and high-performance trace vapor TNT detection

Jianjun Ma; Aldona Kos; Wojtek J. Bock; Xianzhe Li; Huy Nguyen; Zhi Yuan Wang; Andrea Cusano

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Proceedings Volume 7653, Fourth European Workshop on Optical Fibre Sensors; 76531E (2010) https://doi.org/10.1117/12.865080
Event: (EWOFS'10) Fourth European Workshop on Optical Fibre Sensors, 2010, Porto, Portugal

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.

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Jianjun Ma, Aldona Kos, Wojtek J. Bock, Xianzhe Li, Huy Nguyen, Zhi Yuan Wang, and Andrea Cusano "Lab-on-a-fiber: building a fiber optic sensing platform for low-cost and high-performance trace vapor TNT detection", Proc. SPIE 7653, Fourth European Workshop on Optical Fibre Sensors, 76531E (8 September 2010); https://doi.org/10.1117/12.865080

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