Suppression of the Cross-Gain Modulation in Remotely-Pumped EDF/DRA Hybrid Inline Amplifier Systems with Online OTDR for Gain Monitoring

Hiroto KAWAKAMI; Hiroji MASUDA; Kenji SATO; Yutaka MIYAMOTO

doi:10.1093/ietcom/e88-b.5.1986

Suppression of the Cross-Gain Modulation in Remotely-Pumped EDF/DRA Hybrid Inline Amplifier Systems with Online OTDR for Gain Monitoring

Hiroto KAWAKAMI, Hiroji MASUDA, Kenji SATO, Yutaka MIYAMOTO

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Novel gain monitoring scheme in Remotely-Pumped EDF/DRA hybrid inline amplifier is proposed using Optical Time Domain Reflectometer (OTDR). Signal degradation due to cross gain modulation (XGM) caused by an OTDR pulse in the distributed Raman amplifier (DRA) section and remotely-pumped EDF (RP-EDF) unit is analyzed theoretically. The required conditions for suppressing of XGM in the DRA section are derived. We propose the directional bypass configuration to realize OTDR measurement without XGM in the EDF unit. Transmission experiments using the RP-EDF/DRA hybrid inline amplifier demonstrate the absence of transmission impairement induced by OTDR. An analysis of the OTDR trace for each gain medium is also discussed. The theoretical analysis agrees well with the experimental result.

Publication: IEICE TRANSACTIONS on Communications Vol.E88-B No.5 pp.1986-1993

Publication Date: 2005/05/01

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DOI: 10.1093/ietcom/e88-b.5.1986

Type of Manuscript: Special Section PAPER (Joint Special Section on Recent Progress in Optoelectronics and Communications)

Category: Transmission Systems and Technologies

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Hiroto KAWAKAMI, Hiroji MASUDA, Kenji SATO, Yutaka MIYAMOTO, "Suppression of the Cross-Gain Modulation in Remotely-Pumped EDF/DRA Hybrid Inline Amplifier Systems with Online OTDR for Gain Monitoring" in IEICE TRANSACTIONS on Communications, vol. E88-B, no. 5, pp. 1986-1993, May 2005, doi: 10.1093/ietcom/e88-b.5.1986.
Abstract: Novel gain monitoring scheme in Remotely-Pumped EDF/DRA hybrid inline amplifier is proposed using Optical Time Domain Reflectometer (OTDR). Signal degradation due to cross gain modulation (XGM) caused by an OTDR pulse in the distributed Raman amplifier (DRA) section and remotely-pumped EDF (RP-EDF) unit is analyzed theoretically. The required conditions for suppressing of XGM in the DRA section are derived. We propose the directional bypass configuration to realize OTDR measurement without XGM in the EDF unit. Transmission experiments using the RP-EDF/DRA hybrid inline amplifier demonstrate the absence of transmission impairement induced by OTDR. An analysis of the OTDR trace for each gain medium is also discussed. The theoretical analysis agrees well with the experimental result.
URL: https://globals.ieice.org/en_transactions/communications/10.1093/ietcom/e88-b.5.1986/_p

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@ARTICLE{e88-b_5_1986,
author={Hiroto KAWAKAMI, Hiroji MASUDA, Kenji SATO, Yutaka MIYAMOTO, },
journal={IEICE TRANSACTIONS on Communications},
title={Suppression of the Cross-Gain Modulation in Remotely-Pumped EDF/DRA Hybrid Inline Amplifier Systems with Online OTDR for Gain Monitoring},
year={2005},
volume={E88-B},
number={5},
pages={1986-1993},
abstract={Novel gain monitoring scheme in Remotely-Pumped EDF/DRA hybrid inline amplifier is proposed using Optical Time Domain Reflectometer (OTDR). Signal degradation due to cross gain modulation (XGM) caused by an OTDR pulse in the distributed Raman amplifier (DRA) section and remotely-pumped EDF (RP-EDF) unit is analyzed theoretically. The required conditions for suppressing of XGM in the DRA section are derived. We propose the directional bypass configuration to realize OTDR measurement without XGM in the EDF unit. Transmission experiments using the RP-EDF/DRA hybrid inline amplifier demonstrate the absence of transmission impairement induced by OTDR. An analysis of the OTDR trace for each gain medium is also discussed. The theoretical analysis agrees well with the experimental result.},
keywords={},
doi={10.1093/ietcom/e88-b.5.1986},
ISSN={},
month={May},}

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TY - JOUR
TI - Suppression of the Cross-Gain Modulation in Remotely-Pumped EDF/DRA Hybrid Inline Amplifier Systems with Online OTDR for Gain Monitoring
T2 - IEICE TRANSACTIONS on Communications
SP - 1986
EP - 1993
AU - Hiroto KAWAKAMI
AU - Hiroji MASUDA
AU - Kenji SATO
AU - Yutaka MIYAMOTO
PY - 2005
DO - 10.1093/ietcom/e88-b.5.1986
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E88-B
IS - 5
JA - IEICE TRANSACTIONS on Communications
Y1 - May 2005
AB - Novel gain monitoring scheme in Remotely-Pumped EDF/DRA hybrid inline amplifier is proposed using Optical Time Domain Reflectometer (OTDR). Signal degradation due to cross gain modulation (XGM) caused by an OTDR pulse in the distributed Raman amplifier (DRA) section and remotely-pumped EDF (RP-EDF) unit is analyzed theoretically. The required conditions for suppressing of XGM in the DRA section are derived. We propose the directional bypass configuration to realize OTDR measurement without XGM in the EDF unit. Transmission experiments using the RP-EDF/DRA hybrid inline amplifier demonstrate the absence of transmission impairement induced by OTDR. An analysis of the OTDR trace for each gain medium is also discussed. The theoretical analysis agrees well with the experimental result.
ER -