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Numerical optimisation of pump absorption in doped double-clad fiber with transverse and longitudinal perturbation

Numerical optimisation of pump absorption in doped double-clad fiber with transverse and longitudinal perturbation
Numerical optimisation of pump absorption in doped double-clad fiber with transverse and longitudinal perturbation
We report on the impact of the cross-sectional shape of the inner cladding of double-clad fiber on pump absorption using a Beam Propagation Method based on azimuthal harmonics expansions and the so-called "superformula" to describe complex shapes. The impact of shaped cladding and of the fiber layout on pump absorption of double-clad fiber is studied. We observe that for nearly circular cross-section fibers the pump absorption can be enhanced to match that of fiber with strong azimuthal asymmetry, through optimised fiber layout that maximizes pump mixing.
SPIE
Zervas, Michael
1840a474-dd50-4a55-ab74-6f086aa3f701
Codemard, Christophe
3aa50483-b61c-4e7e-b178-c9a88bb47bef
Malinowski, Andrew
54fd31d4-b510-4726-a8cd-33b6b2ad0427
Robin, Craig A.
Hartl, Ingmar
Zervas, Michael
1840a474-dd50-4a55-ab74-6f086aa3f701
Codemard, Christophe
3aa50483-b61c-4e7e-b178-c9a88bb47bef
Malinowski, Andrew
54fd31d4-b510-4726-a8cd-33b6b2ad0427
Robin, Craig A.
Hartl, Ingmar

Zervas, Michael, Codemard, Christophe and Malinowski, Andrew (2017) Numerical optimisation of pump absorption in doped double-clad fiber with transverse and longitudinal perturbation. Robin, Craig A. and Hartl, Ingmar (eds.) In Fiber Lasers XIV: Technology and Systems. vol. 10083, SPIE. 7 pp . (doi:10.1117/12.2252091).

Record type: Conference or Workshop Item (Paper)

Abstract

We report on the impact of the cross-sectional shape of the inner cladding of double-clad fiber on pump absorption using a Beam Propagation Method based on azimuthal harmonics expansions and the so-called "superformula" to describe complex shapes. The impact of shaped cladding and of the fiber layout on pump absorption of double-clad fiber is studied. We observe that for nearly circular cross-section fibers the pump absorption can be enhanced to match that of fiber with strong azimuthal asymmetry, through optimised fiber layout that maximizes pump mixing.

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SPIE 10083 1008315 2017 Codemard Zervas - Version of Record
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Accepted/In Press date: 28 January 2017
e-pub ahead of print date: 22 February 2017
Published date: 2017
Organisations: Optoelectronics Research Centre
Learn more about Optoelectronics Research Centre research

Identifiers

Local EPrints ID: 410114
URI: http://eprints.soton.ac.uk/id/eprint/410114
DOI: doi:10.1117/12.2252091
PURE UUID: c19f3a35-571b-4209-9b13-d885f6264b54
ORCID for Michael Zervas: ORCID iD orcid.org/0000-0002-0651-4059

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Date deposited: 03 Jun 2017 04:03
Last modified: 16 Mar 2024 02:41

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Contributors

Author: Michael Zervas ORCID iD
Author: Christophe Codemard
Author: Andrew Malinowski
Editor: Craig A. Robin
Editor: Ingmar Hartl

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