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28 September 2015 Photothermal effect in gas-filled hollow-core photonic bandgap fiber
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Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96340W (2015) https://doi.org/10.1117/12.2194819
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil
Abstract
We exploit photothermal effect in gas-filled hollow-core photonic bandgap fibers, and demonstrate remarkably sensitive all-fiber (acetylene) gas sensors with noise equivalent concentration of 1-3 parts-per-billion and an unprecedented dynamic range of nearly six orders of magnitude. These results are two to three orders of magnitude better than previous direct absorption-based optical fiber gas sensors. The realization of photothermal spectroscopy in fiber-optic format will allow a new class of sensors with ultra-sensitivity and selectivity, compact size, remote and multiplexed multi-point detection capability.
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Fan Yang, Wei Jin, Yingchun Cao, and Hoi Lut Ho "Photothermal effect in gas-filled hollow-core photonic bandgap fiber", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96340W (28 September 2015); https://doi.org/10.1117/12.2194819
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