Modal instability in two-mode optical fiber amplifiers
Modal instability in two-mode optical fiber amplifiers
In this work we study the conditions for the onset of modal instabilities in two-mode fiber amplifiers. We show that transverse-mode instability (TMI) results as a consequence of cross-phase modulation and four-wave mixing processes. The TMI threshold condition corresponds to a self-phase and cross-phase modulation induced nonlinear phase matching between LP01 and LP11 modes. The derived TMI power threshold shows a functional dependence on fiber and amplification parameters similar to previously derived formula applicable to single-mode fiber amplifiers.
Fiber Amplifiers, Fiber Lasers, Modal Instabilities, Transverse Mode Instabilities
Zervas, Michalis N.
1840a474-dd50-4a55-ab74-6f086aa3f701
5 March 2021
Zervas, Michalis N.
1840a474-dd50-4a55-ab74-6f086aa3f701
Zervas, Michalis N.
(2021)
Modal instability in two-mode optical fiber amplifiers.
Zervas, Michalis N. and Jauregui-Misas, Cesar
(eds.)
In Fiber Lasers XVIII: Technology and Systems.
vol. 11665,
SPIE..
(doi:10.1117/12.2582859).
Record type:
Conference or Workshop Item
(Paper)
Abstract
In this work we study the conditions for the onset of modal instabilities in two-mode fiber amplifiers. We show that transverse-mode instability (TMI) results as a consequence of cross-phase modulation and four-wave mixing processes. The TMI threshold condition corresponds to a self-phase and cross-phase modulation induced nonlinear phase matching between LP01 and LP11 modes. The derived TMI power threshold shows a functional dependence on fiber and amplification parameters similar to previously derived formula applicable to single-mode fiber amplifiers.
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More information
Published date: 5 March 2021
Venue - Dates:
Fiber Lasers XVIII: Technology and Systems 2021, , Virtual, Online, United States, 2021-03-06 - 2021-03-11
Keywords:
Fiber Amplifiers, Fiber Lasers, Modal Instabilities, Transverse Mode Instabilities
Identifiers
Local EPrints ID: 481379
URI: http://eprints.soton.ac.uk/id/eprint/481379
ISSN: 0277-786X
PURE UUID: 235a817e-d171-40fa-891f-18c06aac79d3
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Date deposited: 24 Aug 2023 16:53
Last modified: 18 Mar 2024 02:38
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Contributors
Editor:
Michalis N. Zervas
Editor:
Cesar Jauregui-Misas
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