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Publication Detail
Development of an electrically tuneable Bragg grating filter in polymer optical fibre operating at 1.55 mu m
  • Publication Type:
    Conference
  • Authors:
    Kalli K, Dobb HL, Webb DJ, Carroll K, Themistos C, Komodromos M, Peng GD, Fang Q, Boyd IW
  • Publisher:
    IOP PUBLISHING LTD
  • Publication date:
    10/2007
  • Pagination:
    3155, 3164
  • Published proceedings:
    MEASUREMENT SCIENCE & TECHNOLOGY
  • Volume:
    18
  • Issue:
    10
  • Name of conference:
    18th International Conference on Optical Fibre Sensors
  • Conference place:
    Cancun, MEXICO
  • Conference start date:
    01/10/2006
  • Print ISSN:
    0957-0233
  • Language:
    EN
  • Keywords:
    optical fibre sensors, fibre Bragg gratings, polymer optical fibre, photosensitivity, wavelength tuning, THIN-FILM HEATERS, ADJUSTABLE CHIRP, WAVE-GUIDES, TRANSMISSION, WAVELENGTH, MODULATORS, STRAIN
  • Addresses:
    Higher Tech Inst
    Nanophoton Res Lab
    CY-2152
    Nicosia
    Cyprus

    Aston Univ
    Photon Res Grp
    Birmingham
    B4 7ET
    W Midlands
    England

    Univ New S Wales
    Kensington
    NSW
    2033
    Australia

    UCL
    Dept Elect Engn
    London
    England
Abstract
We present a thorough study on the development of a polymer optical fibre- based tuneable filter utilizing an intra- core Bragg grating that is electrically tuneable, operating at 1.55 mu m. The Bragg grating is made tuneable using a thin- film resistive heater deposited on the surface of the fibre. The polymer fibre was coated via the photochemical deposition of a Pd/ Cu metallic layer with the procedure induced by VUV radiation at room temperature. The resulting device, when wavelength tuned via Joule heating, underwent a wavelength shift of 2 nm for a moderate input power of 160 mW, a wavelength to input power coefficient of - 13.4 pm mW(-1) and time constant of 1.7 s(-1). A basic theoretical study verified that for this fibre type one can treat the device as a one- dimensional system. The model was extended to include the effect of input electrical power changes on the refractive index of the fibre and subsequently to changes in the Bragg wavelength of the grating, showing excellent agreement with the experimental measurements.
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