Investigation of the sensitivity of PCS fibers to changes of light absorption coefficient of the cladding

0304115 - URE-Y 20030077 RIV US eng C - Conference Paper (international conference)
Chomát, Miroslav - Mrázek, Jan - Matějec, Vlastimil - Kašík, Ivan - Skokánková, Jana
Investigation of the sensitivity of PCS fibers to changes of light absorption coefficient of the cladding.
Bellingham: SPIE The International Society for Optical Engineering, 2003. Proceedings of SPIE., 5036. ISBN 0-8194-4837-0. ISSN 0277-786X. In: Photonics, Devices and Systems II. - (Hrabovský, M.; Senderáková, D.; Tománek, P.), s. 72-77
[Photonics Prague 2002 /4./. Prague (CZ), 26.05.2002-29.05.2002 (K)]
R&D Projects: GA ČR GA102/02/0780
Institutional research plan: CEZ:AV0Z2067918
Keywords : light absorption * fibre optic sensors
Subject RIV: JA - Electronics ; Optoelectronics, Electrical Engineering

In the paper the sensitivity of polymer-clad silica /PCS/ fibers to changes of light-absorption coefficient in the evanescent-wave area investigated both theoretically and experimentally. The teoretical analysis was carried out on the basis of a ray-optic model taking into account changes of the complex refractive index of the fiber cladding. Values of the complex refractive index estimated from spectral and refractive-index measurements with water/glycerol solutions of methylene blue were used in the analysis. Results calculated for the excitation of the fiber from axial light sources or by using inclined beams are shown in the paper and compared with experimental results.
Permanent Link: http://hdl.handle.net/11104/0114256