title: Ultra-highly sensitive optical gas sensors based on chemomechanical polymer-incorporated fiber interferometer.
abstract: 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-Pérot 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.
authors: Future Convergence Research Division, Korea Institute of Science and Technology, Seoul 136-791, South Korea.
authors: Mi-Kyung
authors: MK
authors: Bae
authors: Jung Ah
authors: JA
authors: Lim
authors: Sangsig
authors: S
authors: Kim
authors: Yong-Won
authors: YW
authors: Song
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D005740:Gases / Q000032:analysis*; D007368:Interferometry / Q000295:instrumentation*; D055617:Micro-Electrical-Mechanical Systems / Q000295:instrumentation*; D014159:Transducers
chemical_list: D005740:Gases