title: In situ gas sensing using a remotely detectable probe with replaceable insert.
abstract: 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 μm and a glass tube where a 2-μm 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.
authors.affiliation: Nanophotonics Center, Korea Institute of Science and Technology, Seoul, South Korea.
authors.forename: Sun Do
authors.initials: SD
authors.lastname: Lim
authors.forename: Kyungsik
authors.initials: K
authors.lastname: Ma
authors.forename: Ji Ho
authors.initials: JH
authors.lastname: Jeong
authors.forename: Gilhwan
authors.initials: G
authors.lastname: Kim
authors.forename: Kwanil
authors.initials: K
authors.lastname: Lee
authors.forename: Je-Myung
authors.initials: JM
authors.lastname: Jeong
authors.forename: Sang Bae
authors.initials: SB
authors.lastname: Lee
mesh_terms: D000393:Air Pollutants / Q000737:chemistry*; D051337:Chemical Terrorism; D004784:Environmental Monitoring / Q000295:instrumentation*; D004867:Equipment Design; D005740:Gases; D015386:Hazardous Substances; D008962:Models, Theoretical; D055100:Optical Fibers; D055095:Optics and Photonics / Q000295:instrumentation*; D011312:Pressure
chemical_list: D000393:Air Pollutants; D005740:Gases; D015386:Hazardous Substances