Lim, Sun Do Ma, Kyungsik Jeong, Ji Ho Kim, Gilhwan Lee, Kwanil Jeong, Je-Myung Lee, Sang Bae 2024-01-20T15:33:14Z 2024-01-20T15:33:14Z 2021-09-05 2012-01-16 1094-4087 https://pubs.kist.re.kr/handle/201004/129637 We demonstrate a spectroscopic gas sensor using an optical fiber probe with a replaceable insert. The probe consists of a hollow-core photonic bandgap fiber (HC-PBGF) with a core diameter of 10.9 mu m and a glass tube where a 2-mu m hollow core fiber (HCF) with a gold coated end facet can be inserted. The HCF is designed to function as both a gate where gases can enter the HC-PBGF and a mirror reflecting the guided light back to the HC-PBGF. The opposite distal end of the probe is also designed to be able to regulate the gas pressure within the HC-PBGF for a high gas flow rate, while still transmitting the reflected light to the analysis instrument. The remote sensing probe, we believe, has much potential for detecting gases in hazardous environments. (C) 2012 Optical Society of America English OPTICAL SOC AMER PHOTONIC BANDGAP FIBERS CRYSTAL FIBERS OPTICAL-FIBERS ACETYLENE CELL In situ gas sensing using a remotely detectable probe with replaceable insert Article 10.1364/OE.20.001727 1 OPTICS EXPRESS, v.20, no.2, pp.1727 - 1732 OPTICS EXPRESS 20 2 1727 1732 scie scopus 000300057700100 2-s2.0-84855919653 Optics Optics Article PHOTONIC BANDGAP FIBERS CRYSTAL FIBERS OPTICAL-FIBERS ACETYLENE CELL Fiber optics sensors Photonic crystal fibers