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Gain-clamping in two-stage L-band EDFA using an unwanted backward ase from second stage

A gain clamping technique for the long wavelength band erbium-doped fiber amplifier (L-band EDFA) is presented. It uses two circulators and a broad band fiber Bragg grating to route wasted backward C-band ASE from the second stage and launch it back into the input end of the first stage of a two-sta...

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Main Authors: Harun, Sulaiman Wadi, Ahmad, Harith
Format: Article
Published: Elsevier 2003
Subjects:
Q Science (General)
QC Physics
TK Electrical engineering. Electronics Nuclear engineering
Online Access:http://eprints.um.edu.my/19641/
http://dx.doi.org/10.1016/S0030-3992(03)00049-5
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spelling my.um.eprints.196412018-10-11T08:07:30Z http://eprints.um.edu.my/19641/ Gain-clamping in two-stage L-band EDFA using an unwanted backward ase from second stage Harun, Sulaiman Wadi Ahmad, Harith Q Science (General) QC Physics TK Electrical engineering. Electronics Nuclear engineering A gain clamping technique for the long wavelength band erbium-doped fiber amplifier (L-band EDFA) is presented. It uses two circulators and a broad band fiber Bragg grating to route wasted backward C-band ASE from the second stage and launch it back into the input end of the first stage of a two-stage amplifier. The two-stage L-band EDFA has shown a small signal gain improvement of 5.7 dB compared to a single-stage amplifier with a slight noise figure degradation. By utilizing the wasted backward ASE, a L-band gain-clamped EDFA with high gain can be realized. Compared to the unclamped case, this gain-clamping technique is effective in reducing the total gain variation as small as 0.3 dB. Elsevier 2003 Article PeerReviewed Harun, Sulaiman Wadi and Ahmad, Harith (2003) Gain-clamping in two-stage L-band EDFA using an unwanted backward ase from second stage. Optics & Laser Technology, 35 (6). pp. 441-444. ISSN 0030-3992 http://dx.doi.org/10.1016/S0030-3992(03)00049-5 doi:10.1016/S0030-3992(03)00049-5
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
QC Physics
TK Electrical engineering. Electronics Nuclear engineering
spellingShingle Q Science (General)
QC Physics
TK Electrical engineering. Electronics Nuclear engineering
Harun, Sulaiman Wadi
Ahmad, Harith
Gain-clamping in two-stage L-band EDFA using an unwanted backward ase from second stage
description A gain clamping technique for the long wavelength band erbium-doped fiber amplifier (L-band EDFA) is presented. It uses two circulators and a broad band fiber Bragg grating to route wasted backward C-band ASE from the second stage and launch it back into the input end of the first stage of a two-stage amplifier. The two-stage L-band EDFA has shown a small signal gain improvement of 5.7 dB compared to a single-stage amplifier with a slight noise figure degradation. By utilizing the wasted backward ASE, a L-band gain-clamped EDFA with high gain can be realized. Compared to the unclamped case, this gain-clamping technique is effective in reducing the total gain variation as small as 0.3 dB.
format Article
author Harun, Sulaiman Wadi
Ahmad, Harith
author_facet Harun, Sulaiman Wadi
Ahmad, Harith
author_sort Harun, Sulaiman Wadi
title Gain-clamping in two-stage L-band EDFA using an unwanted backward ase from second stage
title_short Gain-clamping in two-stage L-band EDFA using an unwanted backward ase from second stage
title_full Gain-clamping in two-stage L-band EDFA using an unwanted backward ase from second stage
title_fullStr Gain-clamping in two-stage L-band EDFA using an unwanted backward ase from second stage
title_full_unstemmed Gain-clamping in two-stage L-band EDFA using an unwanted backward ase from second stage
title_sort gain-clamping in two-stage l-band edfa using an unwanted backward ase from second stage
publisher Elsevier
publishDate 2003
url http://eprints.um.edu.my/19641/
http://dx.doi.org/10.1016/S0030-3992(03)00049-5
_version_ 1643691047389233152
score 13.154949

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