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Accurate modal gain control in a multimode erbium doped fiber amplifier incorporating ring doping and a simple LP_01 pump configuration

Accurate modal gain control in a multimode erbium doped fiber amplifier incorporating ring doping and a simple LP_01 pump configuration
Accurate modal gain control in a multimode erbium doped fiber amplifier incorporating ring doping and a simple LP_01 pump configuration
We experimentally validate a numerical model to study multimode erbium-doped fiber amplifiers (MM-EDFAs). Using this model, we demonstrate the improved performance achievable in a step index MM-EDFA incorporating a localized erbium doped ring and its potential for Space Division Multiplexed (SDM) transmission. Using a pure LP01 pump beam, which greatly simplifies amplifier construction, accurate modal gain control can be achieved by carefully tuning the thickness of the ring-doped layer in the active fiber and the pump power. In particular, by optimizing the erbium-ring-doped structure and the length of active fiber used, over 20dB gain for both LP01 and LP11 signals with a maximum gain difference of around 2 dB across the C band are predicted for a pure LP01 pump beam delivering 250mW power at 980nm.
1094-4087
20835-20843
Kang, Qiongyue
261baa75-d2c0-46f1-9386-3c6a138129f0
Lim, Ee Leong
55c097dc-30d4-49df-9995-894c87dc2560
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Sahu, Jayanta K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Poletti, Francesco
9adcef99-5558-4644-96d7-ce24b5897491
Baskiotis, Catherine
bee462eb-edb4-4cb5-b24f-3bf350cf12d5
Alam, Shaif-Ul
2b6bdbe5-ddcc-4a88-9057-299360b93435
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Kang, Qiongyue
261baa75-d2c0-46f1-9386-3c6a138129f0
Lim, Ee Leong
55c097dc-30d4-49df-9995-894c87dc2560
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Sahu, Jayanta K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Poletti, Francesco
9adcef99-5558-4644-96d7-ce24b5897491
Baskiotis, Catherine
bee462eb-edb4-4cb5-b24f-3bf350cf12d5
Alam, Shaif-Ul
2b6bdbe5-ddcc-4a88-9057-299360b93435
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3

Kang, Qiongyue, Lim, Ee Leong, Jung, Yongmin, Sahu, Jayanta K., Poletti, Francesco, Baskiotis, Catherine, Alam, Shaif-Ul and Richardson, David J. (2012) Accurate modal gain control in a multimode erbium doped fiber amplifier incorporating ring doping and a simple LP_01 pump configuration. Optics Express, 20 (19), 20835-20843. (doi:10.1364/OE.20.020835).

Record type: Article

Abstract

We experimentally validate a numerical model to study multimode erbium-doped fiber amplifiers (MM-EDFAs). Using this model, we demonstrate the improved performance achievable in a step index MM-EDFA incorporating a localized erbium doped ring and its potential for Space Division Multiplexed (SDM) transmission. Using a pure LP01 pump beam, which greatly simplifies amplifier construction, accurate modal gain control can be achieved by carefully tuning the thickness of the ring-doped layer in the active fiber and the pump power. In particular, by optimizing the erbium-ring-doped structure and the length of active fiber used, over 20dB gain for both LP01 and LP11 signals with a maximum gain difference of around 2 dB across the C band are predicted for a pure LP01 pump beam delivering 250mW power at 980nm.

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Published date: 28 August 2012
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 343089
URI: http://eprints.soton.ac.uk/id/eprint/343089
ISSN: 1094-4087
PURE UUID: 422083ac-fb80-440c-91e2-1e5ee0e61252
ORCID for Yongmin Jung: ORCID iD orcid.org/0000-0002-9054-4372
ORCID for Jayanta K. Sahu: ORCID iD orcid.org/0000-0003-3560-6152
ORCID for Francesco Poletti: ORCID iD orcid.org/0000-0002-1000-3083
ORCID for David J. Richardson: ORCID iD orcid.org/0000-0002-7751-1058

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Date deposited: 24 Sep 2012 12:40
Last modified: 21 Apr 2021 01:43

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Contributors

Author: Qiongyue Kang
Author: Ee Leong Lim
Author: Yongmin Jung ORCID iD
Author: Jayanta K. Sahu ORCID iD
Author: Catherine Baskiotis
Author: Shaif-Ul Alam

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