title: Characterization of broadband fiber optic line detectors for photoacoustic tomography.
abstract: The frequency response of fiber optic line detectors is investigated in the presented paper. An analytical model based on oblique scattering of elastic waves is used to calculate the frequency dependent acousto-optical transfer functions of bare glass optical and polymer optical fibers. From the transfer functions the transient response of fibers detectors to photoacoustically excited spherical sources is derived. Photoacoustic tomography is simulated by calculating the temporal response of arrays of fiber optic line detectors and subsequent image reconstruction. The results show that the choice of the fiber material is of significant importance and influences the quality of imaging.
authors.affiliation: Research Center for Non-Destructive Testing GmbH-RECENDT, Altenberger Strasse 69, 4040 Linz, Austria. thomas.berer@recendt.at
authors.forename: Thomas
authors.initials: T
authors.lastname: Berer
authors.forename: Istvan A
authors.initials: IA
authors.lastname: Veres
authors.forename: Hubert
authors.initials: H
authors.lastname: Grün
authors.forename: Johannes
authors.initials: J
authors.lastname: Bauer-Marschallinger
authors.forename: Karoline
authors.initials: K
authors.lastname: Felbermayer
authors.forename: Peter
authors.initials: P
authors.lastname: Burgholzer
mesh_terms: D000162:Acoustics; D005898:Glass; D055100:Optical Fibers; D019047:Phantoms, Imaging; D061088:Photoacoustic Techniques / Q000295:instrumentation*; D019904:Polymethyl Methacrylate; D014054:Tomography / Q000295:instrumentation*
chemical_list: D019904:Polymethyl Methacrylate