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27 April 2020 Lightweight longitudinal colorimetric fiber sensing platform with optimized dye/polymer thickness for remote sensing and reconnaissance (Conference Presentation)
Richard M. Osgood III, Stephen Giardini, Sean Dinneen, Jin Ho Kim, Joseph Plumitallo, Silverio Johnson, Jimmy Xu, Graham Keeley
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Proceedings Volume 11416, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XXI; 114160N (2020) https://doi.org/10.1117/12.2569948
Event: SPIE Defense + Commercial Sensing, 2020, Online Only
Abstract
Combinatorial colorimetry has detected chemical compounds and uniquely identifies toxic industrial compounds at the ppmv level. We investigate colorimetric dyes, coated with polymers, on long fibers for lightweight remote/standoff fiber-based sensing (unmanned monitoring points, UAVs) exploiting optical fibers’ quality, length, low weight; retaining performance and low power needs. We model/ investigate an advanced longitudinal lightweight polymer fiber colorimetric sensing platform, sensitivity to fiber length, light propagation, and loss of light and sensitivity due to losses in the cladding, the spatial transient’s effect, and predict long lightweight fiber sensor sensitivity/selectivity. Visible light from illuminating LEDs travels along the polymer or silica fiber core and evanescently interacts with colorimetric dyes. Dyes are in porous, mechanically strong polymers with optimized thickness in order to enable analytes to reach the cladding/core interface yet mechanically strong.
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Richard M. Osgood III, Stephen Giardini, Sean Dinneen, Jin Ho Kim, Joseph Plumitallo, Silverio Johnson, Jimmy Xu, and Graham Keeley "Lightweight longitudinal colorimetric fiber sensing platform with optimized dye/polymer thickness for remote sensing and reconnaissance (Conference Presentation)", Proc. SPIE 11416, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XXI, 114160N (27 April 2020); https://doi.org/10.1117/12.2569948
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KEYWORDS
Remote sensing
Polymers
Reconnaissance
Cladding
Optical fibers
Chemical compounds
Colorimetry
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