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Photorefractive index gratings in SnO2:SiO2 optical fibres

Photorefractive index gratings in SnO2:SiO2 optical fibres
Photorefractive index gratings in SnO2:SiO2 optical fibres
Permanent photorefractive gratings with considerable refractive index modulations (~3×10–4) were written in silica optical fibers doped with very low levels of SnO2(~0.15 mol %) using ultraviolet (UV) laser radiation at 248 nm. The photoinduced refractive index change does not show any sign of saturation even for long exposure times (i.e., total fluence >20 kJ/cm2). A comparison with GeO2:SiO2 fibers shows that under similar UV intensities saturation takes place for shorter exposure time and comparable refractive index changes are obtainable for GeO2 concentrations ~10 mol %.
0003-6951
807-809
Brambilla, G.
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Pruneri, V.
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Reekie, L.
ec314137-6924-44ad-86a4-ff3f9a67c1b5
Brambilla, G.
815d9712-62c7-47d1-8860-9451a363a6c8
Pruneri, V.
0e97eb94-b682-409f-a107-ae6b84763f02
Reekie, L.
ec314137-6924-44ad-86a4-ff3f9a67c1b5

Brambilla, G., Pruneri, V. and Reekie, L. (2000) Photorefractive index gratings in SnO2:SiO2 optical fibres. Applied Physics Letters, 76 (7), 807-809. (doi:10.1063/1.125591).

Record type: Article

Abstract

Permanent photorefractive gratings with considerable refractive index modulations (~3×10–4) were written in silica optical fibers doped with very low levels of SnO2(~0.15 mol %) using ultraviolet (UV) laser radiation at 248 nm. The photoinduced refractive index change does not show any sign of saturation even for long exposure times (i.e., total fluence >20 kJ/cm2). A comparison with GeO2:SiO2 fibers shows that under similar UV intensities saturation takes place for shorter exposure time and comparable refractive index changes are obtainable for GeO2 concentrations ~10 mol %.

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Published date: 2000
Learn more about Optoelectronics Research Centre research

Identifiers

Local EPrints ID: 13644
URI: http://eprints.soton.ac.uk/id/eprint/13644
DOI: doi:10.1063/1.125591
ISSN: 0003-6951
PURE UUID: a37a4f8b-ce0a-404c-81f9-a9834fda6654
ORCID for G. Brambilla: ORCID iD orcid.org/0000-0002-5730-0499

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Date deposited: 01 Jan 2005
Last modified: 16 Mar 2024 03:21

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Contributors

Author: G. Brambilla ORCID iD
Author: V. Pruneri
Author: L. Reekie

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