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Optimizing the pumping configuration for the power scaling of in-band pumped erbium doped fiber amplifiers

Optimizing the pumping configuration for the power scaling of in-band pumped erbium doped fiber amplifiers
Optimizing the pumping configuration for the power scaling of in-band pumped erbium doped fiber amplifiers
A highly efficient (~80%), high power (18.45 W) in-band, core pumped erbium/ytterbium co-doped fiber laser is demonstrated. To the best of our knowledge, this is the highest reported efficiency from an in-band pumped 1.5 µm fiber laser operating in the tens of watts regime. Using a fitted simulation model, we show that the significantly sub-quantum limit conversion efficiency of in-band pumped erbium doped fiber amplifiers observed experimentally can be explained by concentration quenching. We then numerically study and experimentally validate the optimum pumping configuration for power scaling of in-band, cladding pumped erbium doped fiber amplifiers. Our simulation results indicate that a ~77% power conversion efficiency with high output power should be possible through cladding pumping of current commercially available pure Erbium doped active fibers providing the loss experienced by the cladding guided 1535 nm pump due to the coating absorption can be reduced to an acceptable level by better coating material choice. The power conversion efficiency has the potential to exceed 90% if concentration quenching of erbium ions can be reduced via improvements in fiber design and fabrication.
1094-4087
13886-13895
Lim, Ee-Leong
bf795250-62e5-45e7-b5e7-4335eb5354c7
Alam, Shaif-ul
2b6bdbe5-ddcc-4a88-9057-299360b93435
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Lim, Ee-Leong
bf795250-62e5-45e7-b5e7-4335eb5354c7
Alam, Shaif-ul
2b6bdbe5-ddcc-4a88-9057-299360b93435
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3

Lim, Ee-Leong, Alam, Shaif-ul and Richardson, David J. (2012) Optimizing the pumping configuration for the power scaling of in-band pumped erbium doped fiber amplifiers Optics Express, 20, (13), pp. 13886-13895.

Record type: Article

Abstract

A highly efficient (~80%), high power (18.45 W) in-band, core pumped erbium/ytterbium co-doped fiber laser is demonstrated. To the best of our knowledge, this is the highest reported efficiency from an in-band pumped 1.5 µm fiber laser operating in the tens of watts regime. Using a fitted simulation model, we show that the significantly sub-quantum limit conversion efficiency of in-band pumped erbium doped fiber amplifiers observed experimentally can be explained by concentration quenching. We then numerically study and experimentally validate the optimum pumping configuration for power scaling of in-band, cladding pumped erbium doped fiber amplifiers. Our simulation results indicate that a ~77% power conversion efficiency with high output power should be possible through cladding pumping of current commercially available pure Erbium doped active fibers providing the loss experienced by the cladding guided 1535 nm pump due to the coating absorption can be reduced to an acceptable level by better coating material choice. The power conversion efficiency has the potential to exceed 90% if concentration quenching of erbium ions can be reduced via improvements in fiber design and fabrication.

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More information

Published date: 18 June 2012
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 340921
URI: http://eprints.soton.ac.uk/id/eprint/340921
ISSN: 1094-4087
PURE UUID: 43db6d10-3f0f-4f6d-9127-25116e0f9572

Catalogue record

Date deposited: 06 Jul 2012 13:22
Last modified: 09 Oct 2017 04:27

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Contributors

Author: Ee-Leong Lim
Author: Shaif-ul Alam

University divisions

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