Open AccessQuick response hydrogen LSPR sensor based on a hetero-core fiber structure with palladium nanoparticles
Author(s) -
Mikio Mikami,
Daisuke Komatsu,
Ai Hosoki,
Michiko Nishiyama,
Hirotaka Igawa,
Atsushi Seki,
Shoichi Kubodera,
Kazuhiro Watanabe
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.412789
Subject(s) - materials science , cladding (metalworking) , hydrogen sensor , surface plasmon resonance , response time , optical fiber , palladium , fiber optic sensor , hydrogen , nanoparticle , optics , optoelectronics , nanotechnology , fiber , chemistry , composite material , biochemistry , computer graphics (images) , physics , organic chemistry , computer science , catalysis
A novel fiber optic localized surface plasmon resonance (LSPR) hydrogen sensor has been developed based on the hetero-core structured with palladium nanoparticles (PdNPs) onto a cylindrical cladding surface. In a light-intensity-based experiment with an LED operating at 850 nm, it has been observed that a transmitted loss change of 0.23 dB was induced with response and recovery times of 1.5 and 3.2 s for 4% hydrogen which are the fastest response times among optical fiber hydrogen sensors. The proposed sensor resolved the inevitable trade-off issue between sensitivity and response time which existed in the previously reported SPR sensors, with keeping the response time below 2.0 s even in a high sensitivity region of interest.