title: Porphyrin-doped solgel-lined structured optical fibers for local and remote sensing.
abstract: We constructed a type of sensor by depositing a solgel layer within the interior holes of a silica-structured fiber and, subsequently, coating this with an acid-responsive porphyrin. Protonation of the porphyrin by an acidic gas (HCl in this case), is detected by a large change in the visible spectrum. Compared to previous work on a liquid-core sensor in a structured optical fiber, the signal-to-noise ratio of this gas sensor shows a reduced signal strength, but the detection rate is increased about fortyfold.
authors.affiliation: School of Chemistry, The University of Sydney, New South Wales 2006, Australia.
authors.forename: George
authors.initials: G
authors.lastname: Huyang
authors.forename: John
authors.initials: J
authors.lastname: Canning
authors.forename: Mattias L
authors.initials: ML
authors.lastname: Åslund
authors.forename: Masood
authors.initials: M
authors.lastname: Naqshbandi
authors.forename: Brant
authors.initials: B
authors.lastname: Gibson
authors.forename: Ingemar
authors.initials: I
authors.lastname: Petermann
authors.forename: Danial
authors.initials: D
authors.lastname: Stocks
authors.forename: Maxwell J
authors.initials: MJ
authors.lastname: Crossley