Bae, Mi-Kyung Lim, Jung Ah Kim, Sangsig Song, Yong-Won 2024-01-20T13:03:18Z 2024-01-20T13:03:18Z 2021-09-01 2013-01-28 1094-4087 https://pubs.kist.re.kr/handle/201004/128434 We demonstrate a novel optical sensor for use in explosive gas detection, having a simple structure, ultrahigh sensitivity, room-temperature sensing/refreshing operation, and no local power requirements. The sensor relies on a fiber Fabry-Perot interferometer prepared using poly(4-vinylpyridine), which induces cavity expansion upon absorption of nitrobenzene, thereby shifting the phase matching conditions of the resonating modes. An estimated sensitivity limit as low as 5 ppb was achieved. (C) 2013 Optical Society of America English OPTICAL SOC AMER THIN-FILMS Ultra-highly sensitive optical gas sensors based on chemomechanical polymer-incorporated fiber interferometer Article 10.1364/OE.21.002018 1 OPTICS EXPRESS, v.21, no.2, pp.2018 - 2023 OPTICS EXPRESS 21 2 2018 2023 scie scopus 000315989500066 2-s2.0-84874070016 Optics Optics Article THIN-FILMS optical gas sensor P4VP fiber Fabry Perot explosive gas