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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Afin de réaliser des amplificateurs à fibre dopée à l'erbium (EDFA) à contrôle automatique de niveau (ALC) avec à la fois une large plage dynamique et de bonnes performances de bruit, nous proposons des EDFA utilisant le schéma de contrôle automatique de puissance (APC) et un compensateur de pente d'atténuation variable (VASC). . Le VASC se compose de deux interféromètres Mach-Zehnder asymétriques (MZI) concaténés en série et des radiateurs thermooptiques (TO) sont fixés aux bras de chaque MZI. En ajustant la puissance électrique fournie aux éléments chauffants TO, une pente d'atténuation presque linéaire peut varier de plus moins 5 dB ou plus sur la bande de longueur d'onde opérationnelle de 30 nm. L'EDFA utilisant le schéma APC et le VASC a présenté une plage dynamique allant jusqu'à 20 dB avec une variation de puissance de sortie aussi faible que 0.7 dB, ce qui est aussi bon que celle de l'EDFA utilisant le schéma APC et un atténuateur optique variable (VOA). ). Le facteur de bruit (NF) de l'EDFA utilisant le VASC a été dégradé d'environ 4.1 dB avec une augmentation de la puissance d'entrée de 20 dB, alors qu'il a été dégradé d'environ 7.3 dB avec une augmentation de la puissance d'entrée de seulement 15 dB dans l'EDFA utilisant le VOA. L'EDFA employant le VASC peut réaliser le fonctionnement ALC sur une plage dynamique plus large avec une dégradation réduite du facteur de bruit. Dans l'EDFA utilisant le VASC, l'excursion de puissance a été supprimée à moins de 1.1 dB, lorsque le niveau du signal d'entrée a été modifié entre -23 dBm/ch et -18 dBm/ch avec un temps de montée/descente de 8 ms.
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Haruo NAKAJI, Motoki KAKUI, Hitoshi HATAYAMA, Chisai HIROSE, Hiroyuki KURATA, Masayuki NISHIMURA, "Superior Noise Performance and Wide Dynamic Range Erbium Doped Fiber Amplifiers Employing Variable Attenuation Slope Compensator" in IEICE TRANSACTIONS on Electronics,
vol. E84-C, no. 5, pp. 598-604, May 2001, doi: .
Abstract: In order to realize automatic-level-controlled (ALC) erbium doped fiber amplifiers (EDFAs) with both wide dynamic range and good noise performance, we propose EDFAs employing the automatic power control (APC) scheme and a variable attenuation slope compensator (VASC). The VASC consists of two asymmetrical Mach-Zehnder interferometers (MZIs) concatenated in series and thermo optic (TO) heaters are attached to the arms of each MZIs. By adjusting the electric power supplied to the TO heaters, an almost linear attenuation slope can be varied by plus minus 5 dB or more over the operational wavelength band of 30 nm. The EDFA employing the APC scheme and the VASC has exhibited a dynamic range as large as 20 dB with the output power variation as small as 0.7 dB, which is as good as that of the EDFA employing the APC scheme and a variable optical attenuator (VOA). The noise figure (NF) of the EDFA employing the VASC was degraded about 4.1 dB with increasing the input power by 20 dB, while it was degraded about 7.3 dB with increasing the input power by only 15 dB in the EDFA employing the VOA. The EDFA employing the VASC can realize the ALC operation over a wider dynamic range with reduced noise figure degradation. In the EDFA employing the VASC, the power excursion was suppressed to less than 1.1 dB, when the input signal level was changed between -23 dBm/ch and -18 dBm/ch with the rise/fall time of 8 ms.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e84-c_5_598/_p
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@ARTICLE{e84-c_5_598,
author={Haruo NAKAJI, Motoki KAKUI, Hitoshi HATAYAMA, Chisai HIROSE, Hiroyuki KURATA, Masayuki NISHIMURA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Superior Noise Performance and Wide Dynamic Range Erbium Doped Fiber Amplifiers Employing Variable Attenuation Slope Compensator},
year={2001},
volume={E84-C},
number={5},
pages={598-604},
abstract={In order to realize automatic-level-controlled (ALC) erbium doped fiber amplifiers (EDFAs) with both wide dynamic range and good noise performance, we propose EDFAs employing the automatic power control (APC) scheme and a variable attenuation slope compensator (VASC). The VASC consists of two asymmetrical Mach-Zehnder interferometers (MZIs) concatenated in series and thermo optic (TO) heaters are attached to the arms of each MZIs. By adjusting the electric power supplied to the TO heaters, an almost linear attenuation slope can be varied by plus minus 5 dB or more over the operational wavelength band of 30 nm. The EDFA employing the APC scheme and the VASC has exhibited a dynamic range as large as 20 dB with the output power variation as small as 0.7 dB, which is as good as that of the EDFA employing the APC scheme and a variable optical attenuator (VOA). The noise figure (NF) of the EDFA employing the VASC was degraded about 4.1 dB with increasing the input power by 20 dB, while it was degraded about 7.3 dB with increasing the input power by only 15 dB in the EDFA employing the VOA. The EDFA employing the VASC can realize the ALC operation over a wider dynamic range with reduced noise figure degradation. In the EDFA employing the VASC, the power excursion was suppressed to less than 1.1 dB, when the input signal level was changed between -23 dBm/ch and -18 dBm/ch with the rise/fall time of 8 ms.},
keywords={},
doi={},
ISSN={},
month={May},}
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TY - JOUR
TI - Superior Noise Performance and Wide Dynamic Range Erbium Doped Fiber Amplifiers Employing Variable Attenuation Slope Compensator
T2 - IEICE TRANSACTIONS on Electronics
SP - 598
EP - 604
AU - Haruo NAKAJI
AU - Motoki KAKUI
AU - Hitoshi HATAYAMA
AU - Chisai HIROSE
AU - Hiroyuki KURATA
AU - Masayuki NISHIMURA
PY - 2001
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E84-C
IS - 5
JA - IEICE TRANSACTIONS on Electronics
Y1 - May 2001
AB - In order to realize automatic-level-controlled (ALC) erbium doped fiber amplifiers (EDFAs) with both wide dynamic range and good noise performance, we propose EDFAs employing the automatic power control (APC) scheme and a variable attenuation slope compensator (VASC). The VASC consists of two asymmetrical Mach-Zehnder interferometers (MZIs) concatenated in series and thermo optic (TO) heaters are attached to the arms of each MZIs. By adjusting the electric power supplied to the TO heaters, an almost linear attenuation slope can be varied by plus minus 5 dB or more over the operational wavelength band of 30 nm. The EDFA employing the APC scheme and the VASC has exhibited a dynamic range as large as 20 dB with the output power variation as small as 0.7 dB, which is as good as that of the EDFA employing the APC scheme and a variable optical attenuator (VOA). The noise figure (NF) of the EDFA employing the VASC was degraded about 4.1 dB with increasing the input power by 20 dB, while it was degraded about 7.3 dB with increasing the input power by only 15 dB in the EDFA employing the VOA. The EDFA employing the VASC can realize the ALC operation over a wider dynamic range with reduced noise figure degradation. In the EDFA employing the VASC, the power excursion was suppressed to less than 1.1 dB, when the input signal level was changed between -23 dBm/ch and -18 dBm/ch with the rise/fall time of 8 ms.
ER -