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Optimized modulation formats for suppression of stimulated Brillouin scattering in optical fiber amplifiers

Optimized modulation formats for suppression of stimulated Brillouin scattering in optical fiber amplifiers
Optimized modulation formats for suppression of stimulated Brillouin scattering in optical fiber amplifiers
Laser linewidth broadening through phase modulation is an effective way of suppressing stimulated Brillouin scattering (SBS) [1]. However, several applications require laser linewidth to be as narrow as possible. These contradicting requirements call for phase modulation formats that allow for suppression of SBS while maintaining the laser power within a tolerable optical bandwidth. Previously, we have reported on the optimization of phase modulation for single-frequency laser to get nearly equal amplitude spectral components within the given optical bandwidth [2]. In Ref. [2] the spectral line spacing is assumed to be large compared to the intrinsic Brillouin gain bandwidth and there is no interference among the corresponding Brillouin Stokes waves. A more robust SBS model is required to obtain fully optimized phase modulation formats if the spectral spacing is small. In the present work, we implement a SBS finite difference model based on the work of Ref. [3].
Harish, A.V.
833a8dce-cb98-479c-a78d-f754883ff2fd
Nilsson, J.
f41d0948-4ca9-4b93-b44d-680ca0bf157b
Harish, A.V.
833a8dce-cb98-479c-a78d-f754883ff2fd
Nilsson, J.
f41d0948-4ca9-4b93-b44d-680ca0bf157b

Harish, A.V. and Nilsson, J. (2017) Optimized modulation formats for suppression of stimulated Brillouin scattering in optical fiber amplifiers. 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), Germany. 25 - 29 Jun 2017. (doi:10.1109/CLEOE-EQEC.2017.8087065).

Record type: Conference or Workshop Item (Paper)

Abstract

Laser linewidth broadening through phase modulation is an effective way of suppressing stimulated Brillouin scattering (SBS) [1]. However, several applications require laser linewidth to be as narrow as possible. These contradicting requirements call for phase modulation formats that allow for suppression of SBS while maintaining the laser power within a tolerable optical bandwidth. Previously, we have reported on the optimization of phase modulation for single-frequency laser to get nearly equal amplitude spectral components within the given optical bandwidth [2]. In Ref. [2] the spectral line spacing is assumed to be large compared to the intrinsic Brillouin gain bandwidth and there is no interference among the corresponding Brillouin Stokes waves. A more robust SBS model is required to obtain fully optimized phase modulation formats if the spectral spacing is small. In the present work, we implement a SBS finite difference model based on the work of Ref. [3].

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More information

Published date: 2017
Venue - Dates: 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), Germany, 2017-06-25 - 2017-06-29

Identifiers

Local EPrints ID: 442312
URI: http://eprints.soton.ac.uk/id/eprint/442312
PURE UUID: acbd20d9-cef0-44f8-85db-b3e44cb2b40d
ORCID for J. Nilsson: ORCID iD orcid.org/0000-0003-1691-7959

Catalogue record

Date deposited: 13 Jul 2020 16:31
Last modified: 20 Aug 2020 01:34

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