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Gain variation induced by power transient in thulium-doped fiber amplifier at 2µm and its reduction by optical gain clamping technique

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

Optics Communications, Volume: 384, Pages: 89 - 92

Swansea University Author: Karin Ennser

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DOI (Published version): 10.1016/j.optcom.2016.10.016

Abstract

This paper investigates the dynamic behavior of a thulium doped fiber amplifier (TDFA) operating in the 2 µm region for reconfigurable wavelength division multiplexing (WDM) systems. We show deleterious channel power fluctuations may be generated by input power variation at the amplifier and we prop...

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Published in: Optics Communications
ISSN: 0030-4018
Published: 2017
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URI: https://cronfa.swan.ac.uk/Record/cronfa30609
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first_indexed 2016-10-17T12:56:29Z
last_indexed 2018-02-09T05:16:37Z
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spelling 2016-11-08T11:42:59.3419322 v2 30609 2016-10-17 Gain variation induced by power transient in thulium-doped fiber amplifier at 2µm and its reduction by optical gain clamping technique 0aa21e9e51bfb74793881e5780d29ae8 Karin Ennser Karin Ennser true false 2016-10-17 EEEG This paper investigates the dynamic behavior of a thulium doped fiber amplifier (TDFA) operating in the 2 µm region for reconfigurable wavelength division multiplexing (WDM) systems. We show deleterious channel power fluctuations may be generated by input power variation at the amplifier and we propose the use of an optical gain-clamping technique. The investigated system consists of 20 channels with −4 dBm total input power. Our findings revealed that the effects of power transients due to channel reconfigurations are significantly reduced by a lasing feedback signal. Simulation results show that a power excursion of 4.3 dB is produced after dropping 19 channels when the amplifier gain is unclamped and only 0.0062 dB when the amplifier gain is clamped. The dynamics of GC-TDFA are mainly influenced by the value of the pump power factor and thus the laser signal achieves a stronger stabilization condition with increasing pump power factor. Hence, optical gain clamping is a simple and robust technique to control the power transient in the thulium-doped fiber amplifier of WDM systems at 2 µm. Journal Article Optics Communications 384 89 92 0030-4018 1 2 2017 2017-02-01 10.1016/j.optcom.2016.10.016 COLLEGE NANME Electronic and Electrical Engineering COLLEGE CODE EEEG Swansea University 2016-11-08T11:42:59.3419322 2016-10-17T10:04:13.6095306 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 0030609-28102016122606.pdf khamis2016(2).pdf 2016-10-28T12:26:06.1930000 Output 472525 application/pdf Accepted Manuscript true 2017-10-15T00:00:00.0000000 false
title Gain variation induced by power transient in thulium-doped fiber amplifier at 2µm and its reduction by optical gain clamping technique
spellingShingle Gain variation induced by power transient in thulium-doped fiber amplifier at 2µm and its reduction by optical gain clamping technique
Karin Ennser
title_short Gain variation induced by power transient in thulium-doped fiber amplifier at 2µm and its reduction by optical gain clamping technique
title_full Gain variation induced by power transient in thulium-doped fiber amplifier at 2µm and its reduction by optical gain clamping technique
title_fullStr Gain variation induced by power transient in thulium-doped fiber amplifier at 2µm and its reduction by optical gain clamping technique
title_full_unstemmed Gain variation induced by power transient in thulium-doped fiber amplifier at 2µm and its reduction by optical gain clamping technique
title_sort Gain variation induced by power transient in thulium-doped fiber amplifier at 2µm and its reduction by optical gain clamping technique
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 384
container_start_page 89
publishDate 2017
institution Swansea University
issn 0030-4018
doi_str_mv 10.1016/j.optcom.2016.10.016
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 dynamic behavior of a thulium doped fiber amplifier (TDFA) operating in the 2 µm region for reconfigurable wavelength division multiplexing (WDM) systems. We show deleterious channel power fluctuations may be generated by input power variation at the amplifier and we propose the use of an optical gain-clamping technique. The investigated system consists of 20 channels with −4 dBm total input power. Our findings revealed that the effects of power transients due to channel reconfigurations are significantly reduced by a lasing feedback signal. Simulation results show that a power excursion of 4.3 dB is produced after dropping 19 channels when the amplifier gain is unclamped and only 0.0062 dB when the amplifier gain is clamped. The dynamics of GC-TDFA are mainly influenced by the value of the pump power factor and thus the laser signal achieves a stronger stabilization condition with increasing pump power factor. Hence, optical gain clamping is a simple and robust technique to control the power transient in the thulium-doped fiber amplifier of WDM systems at 2 µm.
published_date 2017-02-01T03:37:13Z
_version_ 1763751633795153920
score 11.036553

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