Fibre gratings in silica optical fibre
Fibre gratings in silica optical fibre
Photorefractive fibre gratings are devices that are rapidly being taken up by the telecommunications and fibre sensor industries due to their wide range of uses. They can be thought of as one-dimensional holograms written directly into the core of a conventional optical fibre which have the capability of reflecting light of a specific wavelength back along the fibre. Like holograms, they are essentially permanent and are written using specialised lasers. They rely on the fact that the refractive index of the germania-doped silica fibre core can be changed by exposure to intense ultraviolet (UV) light, however the exact nature of the photorefractive change is not yet fully understood. In general, it is possible to produce an absolute refractive index change of 10-6 - 10-3 in most fibres, though it is necessary to use specially designed fibres in order to achieve the highest index change.
978-0852969526
Reekie, L.
ec314137-6924-44ad-86a4-ff3f9a67c1b5
Hewak, D.
87c80070-c101-4f7a-914f-4cc3131e3db0
November 1998
Reekie, L.
ec314137-6924-44ad-86a4-ff3f9a67c1b5
Hewak, D.
87c80070-c101-4f7a-914f-4cc3131e3db0
Reekie, L.
(1998)
Fibre gratings in silica optical fibre.
Hewak, D.
(ed.)
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Conference or Workshop Item
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Abstract
Photorefractive fibre gratings are devices that are rapidly being taken up by the telecommunications and fibre sensor industries due to their wide range of uses. They can be thought of as one-dimensional holograms written directly into the core of a conventional optical fibre which have the capability of reflecting light of a specific wavelength back along the fibre. Like holograms, they are essentially permanent and are written using specialised lasers. They rely on the fact that the refractive index of the germania-doped silica fibre core can be changed by exposure to intense ultraviolet (UV) light, however the exact nature of the photorefractive change is not yet fully understood. In general, it is possible to produce an absolute refractive index change of 10-6 - 10-3 in most fibres, though it is necessary to use specially designed fibres in order to achieve the highest index change.
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Published date: November 1998
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Local EPrints ID: 361280
URI: http://eprints.soton.ac.uk/id/eprint/361280
ISBN: 978-0852969526
PURE UUID: 0444ea23-e829-4302-99c8-fdad63368bdf
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Date deposited: 17 Jan 2014 09:40
Last modified: 14 Mar 2024 15:48
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Author:
L. Reekie
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