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Enhancement on the generation of amplified spontaneous emission in thulium-doped silica fiber at 2 μ m

M.A. Khamis, K. Ennser, Karin Ennser

Optics Communications, Volume: 403, Pages: 127 - 132

Swansea University Author: Karin Ennser

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DOI (Published version): 10.1016/j.optcom.2017.07.032

Abstract

This paper investigates the generation of the amplified spontaneous emission (ASE) from thulium-doped silica fiber pumped at 1570 nm and 793 nm. The developed model provides the ASE spectral power as functions of the fiber length and the pump power under single-pass forward (SPF) and double-pass bi-...

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Published in: Optics Communications
ISSN: 0030-4018
Published: 2017
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URI: https://cronfa.swan.ac.uk/Record/cronfa34754
first_indexed 2017-07-26T14:30:01Z
last_indexed 2018-02-09T05:25:11Z
id cronfa34754
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spelling 2017-10-03T16:07:10.4417235 v2 34754 2017-07-26 Enhancement on the generation of amplified spontaneous emission in thulium-doped silica fiber at 2 μ m 0aa21e9e51bfb74793881e5780d29ae8 Karin Ennser Karin Ennser true false 2017-07-26 ACEM This paper investigates the generation of the amplified spontaneous emission (ASE) from thulium-doped silica fiber pumped at 1570 nm and 793 nm. The developed model provides the ASE spectral power as functions of the fiber length and the pump power under single-pass forward (SPF) and double-pass bi-directional (DPB) pumping schemes. A broadband ASE source generated by solving a set of rate and propagation equations for 1570 nm and 793 nm pumping transitions, and taking into account the influences of cross relaxation (CR) in both pump schemes. Our findings reveal that for 1570 nm pumping scheme, CR transition reduces the ASE generation. In addition, longer fluorescent lifetime increases the ASE power and reduces the pump power threshold. We numerically enhanced the generation of ASE broadband source from 1570 nm/1570 nm DPB pumping scheme. Our results show that 1570 nm/1570 nm DPB produces broadband ASE source with high slope efficiency and broader spectral bandwidth than that in SPF configuration. As a result, a 1570 nm/1570 nm DPB pump scheme is a suitable configuration to obtain higher power efficiency and a wider broadband source for the chosen thulium-doped silica fiber characteristics. Journal Article Optics Communications 403 127 132 0030-4018 Thulium-doped fiber; Amplified spontaneous emission; Silica host material; Numerical simulation; Cross relaxation process 15 11 2017 2017-11-15 10.1016/j.optcom.2017.07.032 COLLEGE NANME Aerospace, Civil, Electrical, and Mechanical Engineering COLLEGE CODE ACEM Swansea University 2017-10-03T16:07:10.4417235 2017-07-26T11:57:45.4243676 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering M.A. Khamis 1 K. Ennser 2 Karin Ennser 3 0034754-01082017090544.pdf khamis2017.pdf 2017-08-01T09:05:44.8430000 Output 865291 application/pdf Accepted Manuscript true 2018-07-25T00:00:00.0000000 true eng
title Enhancement on the generation of amplified spontaneous emission in thulium-doped silica fiber at 2 μ m
spellingShingle Enhancement on the generation of amplified spontaneous emission in thulium-doped silica fiber at 2 μ m
Karin Ennser
title_short Enhancement on the generation of amplified spontaneous emission in thulium-doped silica fiber at 2 μ m
title_full Enhancement on the generation of amplified spontaneous emission in thulium-doped silica fiber at 2 μ m
title_fullStr Enhancement on the generation of amplified spontaneous emission in thulium-doped silica fiber at 2 μ m
title_full_unstemmed Enhancement on the generation of amplified spontaneous emission in thulium-doped silica fiber at 2 μ m
title_sort Enhancement on the generation of amplified spontaneous emission in thulium-doped silica fiber at 2 μ m
author_id_str_mv 0aa21e9e51bfb74793881e5780d29ae8
author_id_fullname_str_mv 0aa21e9e51bfb74793881e5780d29ae8_***_Karin Ennser
author Karin Ennser
author2 M.A. Khamis
K. Ennser
Karin Ennser
format Journal article
container_title Optics Communications
container_volume 403
container_start_page 127
publishDate 2017
institution Swansea University
issn 0030-4018
doi_str_mv 10.1016/j.optcom.2017.07.032
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering
document_store_str 1
active_str 0
description This paper investigates the generation of the amplified spontaneous emission (ASE) from thulium-doped silica fiber pumped at 1570 nm and 793 nm. The developed model provides the ASE spectral power as functions of the fiber length and the pump power under single-pass forward (SPF) and double-pass bi-directional (DPB) pumping schemes. A broadband ASE source generated by solving a set of rate and propagation equations for 1570 nm and 793 nm pumping transitions, and taking into account the influences of cross relaxation (CR) in both pump schemes. Our findings reveal that for 1570 nm pumping scheme, CR transition reduces the ASE generation. In addition, longer fluorescent lifetime increases the ASE power and reduces the pump power threshold. We numerically enhanced the generation of ASE broadband source from 1570 nm/1570 nm DPB pumping scheme. Our results show that 1570 nm/1570 nm DPB produces broadband ASE source with high slope efficiency and broader spectral bandwidth than that in SPF configuration. As a result, a 1570 nm/1570 nm DPB pump scheme is a suitable configuration to obtain higher power efficiency and a wider broadband source for the chosen thulium-doped silica fiber characteristics.
published_date 2017-11-15T13:14:09Z
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score 11.048626

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