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Proceedings Paper

Spectral modification of type IA fibre Bragg gratings by high power near infra-red lasers
Author(s): Kyriacos Kalli; A. George Simpson; Kaimin Zhou; Lin Zhang; David Birkin; Tim Ellingham; Ian Bennion
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Paper Abstract

We report the first experimental measurements on the spectral modification of Type IA fibre Bragg gratings, incorporated in an optical network, which result from the use of high-power, near infrared lasers. The fibre grating properties are modified in a controlled manner by exploiting the characteristics of the inherent 1400nm absorption band of the optical fibre, which grows in strength during the Type IA grating inscription. If the fibre network is illuminated with a high power laser, having an emission wavelength coincident with the absorption band, the Type IA centre wavelength and chirp can be modified. Furthermore, partial grating erasure is demonstrated. This has serious implications when using Type IA gratings in an optical network, as their spectrum can be modified using purely optical methods (no external heating source acts on the fibre), and to their long-term stability as the grating is shown to decay. Conversely, suitably stabilised gratings can be spectrally tailored, for tuning fibre lasers or edge filter modification in sensing applications, by purely optical means.

Paper Details

Date Published: 24 May 2006
PDF: 11 pages
Proc. SPIE 6193, Reliability of Optical Fiber Components, Devices, Systems, and Networks III, 61930Y (24 May 2006); doi: 10.1117/12.662315
Show Author Affiliations
Kyriacos Kalli, Higher Technical Institute (Cyprus)
A. George Simpson, Aston Univ. (United Kingdom)
Kaimin Zhou, Aston Univ. (United Kingdom)
Lin Zhang, Aston Univ. (United Kingdom)
David Birkin, Aston Univ. (United Kingdom)
Tim Ellingham, Aston Univ. (United Kingdom)
Ian Bennion, Aston Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 6193:
Reliability of Optical Fiber Components, Devices, Systems, and Networks III
Hans G. Limberger; M. John Matthewson, Editor(s)

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