Journal
OPTICS EXPRESS
Volume 21, Issue 2, Pages 2018-2023Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.21.002018
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Funding
- National Research Foundation (NRF)
- Ministry of Education, Science, and Technology (MEST), Republic of Korea [2011-0028978]
- National Research Foundation of Korea [2011-0028978] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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
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