Multi-point hydrogen detection system using hetero-core structured optical fiber hydrogen tip sensor based on surface plasmon resonance and pseudorandom noise code correlation reflectometry

Ai Hosoki; Michiko Nishiyama; Hirotaka Igawa; Atsushi Seki; Kazuhiro Watanabe

doi:10.1117/12.2184381

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1 July 2015 Multi-point hydrogen detection system using hetero-core structured optical fiber hydrogen tip sensor based on surface plasmon resonance and pseudorandom noise code correlation reflectometry

Ai Hosoki, Michiko Nishiyama, Hirotaka Igawa, Atsushi Seki, Kazuhiro Watanabe

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Proceedings Volume 9655, Fifth Asia-Pacific Optical Sensors Conference; 965515 (2015) https://doi.org/10.1117/12.2184381
Event: Fifth Asia Pacific Optical Sensors Conference, 2015, Jeju, Korea, Republic of

Abstract

In this paper, the multi-point hydrogen detection system using the hetero-core optical fiber hydrogen tip sensor based on surface plasmon resonance (SPR) and Pseudorandom Noise code correlation reflectometry (PNCR) has been proposed. This method makes use of the correlation between a launched pseudorandom noise code signal and its reflection, can obtain a high signal to noise ration. We demonstrated the 4 sensors characteristics to 4% hydrogen. It was observed from experimental results that all sensors induced a response time of 15 s for 4% hydrogen for the 25-nm Au / 60-nm Ta₂O₅ / 5-nm Pd multi-layers film. In addition, all sensors were detected the hydrogen concentration with sufficient sensitivities.

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Ai Hosoki, Michiko Nishiyama, Hirotaka Igawa, Atsushi Seki, and Kazuhiro Watanabe "Multi-point hydrogen detection system using hetero-core structured optical fiber hydrogen tip sensor based on surface plasmon resonance and pseudorandom noise code correlation reflectometry", Proc. SPIE 9655, Fifth Asia-Pacific Optical Sensors Conference, 965515 (1 July 2015); https://doi.org/10.1117/12.2184381

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