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Sub-microsecond pulsed pumping as a means of suppressing amplified spontaneous emission in tandem pumped fiber amplifiers

Sub-microsecond pulsed pumping as a means of suppressing amplified spontaneous emission in tandem pumped fiber amplifiers
Sub-microsecond pulsed pumping as a means of suppressing amplified spontaneous emission in tandem pumped fiber amplifiers
We propose a new tandem pumping scheme in three-level rare-earth doped optical fibers where energy storage in a pump fiber laser enables much shorter (~500 ns) pump pulses than is possible with pulsed diode laser pumping. This has the effect of reducing the time during which the final amplifier has high inversion and hence reduces the ASE when compared to continuous wave (c.w.) tandem pumping. We simulate the gain and ASE dynamics in a pulse-pumped Yb-doped fiber amplifier and show that the ratio of amplified signal to ASE background can be improved by up to 2 orders of magnitude over a large range of pulse energies compared to c.w. tandem pumping. Sub-micro-second pulsed tandem pumping offers a relatively straightforward, as yet experimentally untried, way to substantially reduce undesirable ASE compared to the levels in diode-pumped fiber amplifiers.
pulsed fiber amplifier, tandem pumping
0018-9197
1-8
Malinowski, Andrew
54fd31d4-b510-4726-a8cd-33b6b2ad0427
Price, Jonathan
fddcce17-291b-4d01-bd38-8fb0453abdc8
Zervas, Michael
1840a474-dd50-4a55-ab74-6f086aa3f701
Malinowski, Andrew
54fd31d4-b510-4726-a8cd-33b6b2ad0427
Price, Jonathan
fddcce17-291b-4d01-bd38-8fb0453abdc8
Zervas, Michael
1840a474-dd50-4a55-ab74-6f086aa3f701

Malinowski, Andrew, Price, Jonathan and Zervas, Michael (2015) Sub-microsecond pulsed pumping as a means of suppressing amplified spontaneous emission in tandem pumped fiber amplifiers. IEEE Journal of Quantum Electronics, 51 (12), 1-8. (doi:10.1109/JQE.2015.2501641).

Record type: Article

Abstract

We propose a new tandem pumping scheme in three-level rare-earth doped optical fibers where energy storage in a pump fiber laser enables much shorter (~500 ns) pump pulses than is possible with pulsed diode laser pumping. This has the effect of reducing the time during which the final amplifier has high inversion and hence reduces the ASE when compared to continuous wave (c.w.) tandem pumping. We simulate the gain and ASE dynamics in a pulse-pumped Yb-doped fiber amplifier and show that the ratio of amplified signal to ASE background can be improved by up to 2 orders of magnitude over a large range of pulse energies compared to c.w. tandem pumping. Sub-micro-second pulsed tandem pumping offers a relatively straightforward, as yet experimentally untried, way to substantially reduce undesirable ASE compared to the levels in diode-pumped fiber amplifiers.

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More information

Submitted date: 14 August 2015
Accepted/In Press date: 9 November 2015
e-pub ahead of print date: 18 November 2015
Published date: December 2015
Keywords: pulsed fiber amplifier, tandem pumping
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 380417
URI: https://eprints.soton.ac.uk/id/eprint/380417
ISSN: 0018-9197
PURE UUID: 348c2595-06fb-42d0-8dde-795c2c14f987
ORCID for Jonathan Price: ORCID iD orcid.org/0000-0003-0256-9172
ORCID for Michael Zervas: ORCID iD orcid.org/0000-0002-0651-4059

Catalogue record

Date deposited: 03 Dec 2015 11:54
Last modified: 31 Jul 2019 00:53

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