Mitigating probe pulse deformation in Raman amplification in OTDR fiber sensing systems

Zepeng Wang; Mads Vandborg; Tomin Joy; Neethu Mariam Mathew; Lars Grüner-Nielsen; Lars Rishøj; Jesper Christensen; Thorben Jostmeier; Benjamin Marx; Wieland Hill; Karsten Rottwitt

doi:10.1364/OE.482292

Mitigating probe pulse deformation in Raman amplification in OTDR fiber sensing systems

Zepeng Wang, Mads Vandborg, Tomin Joy, Neethu Mariam Mathew, Lars Grüner-Nielsen, Lars Rishøj, Jesper Christensen, Thorben Jostmeier, Benjamin Marx, Wieland Hill, Karsten Rottwitt

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Abstract

We report the numerical and experimental study of probe pulse deformation in a forward-pumped distributed Raman amplifier on a 40-km standard single mode fiber. Distributed
Raman amplification can improve the range of OTDR-based sensing systems, but it could result in pulse deformation. A smaller Raman gain coefficient can be used to mitigate pulse deformation. The sensing performance can still be maintained by compensating for the decrease in the Raman gain coefficient by increasing the pump power. The tunability of the Raman gain coefficient and pump power levels are predicted while keeping the probe power below the modulation instability limit.

Original language	English
Journal	Optics Express
Volume	31
Issue number	7
Pages (from-to)	11457-11470
ISSN	1094-4087
DOIs	https://doi.org/10.1364/OE.482292
Publication status	Published - 2023

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title = "Mitigating probe pulse deformation in Raman amplification in OTDR fiber sensing systems",

abstract = "We report the numerical and experimental study of probe pulse deformation in a forward-pumped distributed Raman amplifier on a 40-km standard single mode fiber. DistributedRaman amplification can improve the range of OTDR-based sensing systems, but it could result in pulse deformation. A smaller Raman gain coefficient can be used to mitigate pulse deformation. The sensing performance can still be maintained by compensating for the decrease in the Raman gain coefficient by increasing the pump power. The tunability of the Raman gain coefficient and pump power levels are predicted while keeping the probe power below the modulation instability limit.",

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T1 - Mitigating probe pulse deformation in Raman amplification in OTDR fiber sensing systems

AU - Wang, Zepeng

AU - Vandborg, Mads

AU - Joy, Tomin

AU - Mathew, Neethu Mariam

AU - Grüner-Nielsen, Lars

AU - Rishøj, Lars

AU - Christensen, Jesper

AU - Jostmeier, Thorben

AU - Marx, Benjamin

AU - Hill, Wieland

AU - Rottwitt, Karsten

PY - 2023

Y1 - 2023

N2 - We report the numerical and experimental study of probe pulse deformation in a forward-pumped distributed Raman amplifier on a 40-km standard single mode fiber. DistributedRaman amplification can improve the range of OTDR-based sensing systems, but it could result in pulse deformation. A smaller Raman gain coefficient can be used to mitigate pulse deformation. The sensing performance can still be maintained by compensating for the decrease in the Raman gain coefficient by increasing the pump power. The tunability of the Raman gain coefficient and pump power levels are predicted while keeping the probe power below the modulation instability limit.

AB - We report the numerical and experimental study of probe pulse deformation in a forward-pumped distributed Raman amplifier on a 40-km standard single mode fiber. DistributedRaman amplification can improve the range of OTDR-based sensing systems, but it could result in pulse deformation. A smaller Raman gain coefficient can be used to mitigate pulse deformation. The sensing performance can still be maintained by compensating for the decrease in the Raman gain coefficient by increasing the pump power. The tunability of the Raman gain coefficient and pump power levels are predicted while keeping the probe power below the modulation instability limit.

U2 - 10.1364/OE.482292

DO - 10.1364/OE.482292

M3 - Journal article

C2 - 37155780

SN - 1094-4087

VL - 31

SP - 11457

EP - 11470

JO - Optics Express

JF - Optics Express

IS - 7

ER -

Mitigating probe pulse deformation in Raman amplification in OTDR fiber sensing systems

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