Ultra-long ϕ-OTDR Assisted by Modulated Second-order Raman Amplification

Javier Nuño; Sonia Martin-Lopez; Juan Diego Ania-Castañón; Miguel Gonzalez-Herraez; Hugo F. Martins

doi:10.1364/SENSORS.2021.STu2B.4

OSA Optical Sensors and Sensing Congress 2021 (AIS, FTS, HISE, SENSORS, ES)
OSA Technical Digest (Optica Publishing Group, 2021),
paper STu2B.4
•https://doi.org/10.1364/SENSORS.2021.STu2B.4

Ultra-long ϕ-OTDR Assisted by Modulated Second-order Raman Amplification

Javier Nuño, Sonia Martin-Lopez, Juan Diego Ania-Castañón, Miguel Gonzalez-Herraez, and Hugo F. Martins

Optical Sensors 2021

Washington, DC United States
19–23 July 2021
ISBN: 978-1-943580-90-3

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Optical Fiber Sensors V (STu2B)

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J. Nuño, S. Martin-Lopez, J. D. Ania-Castañón, M. Gonzalez-Herraez, and H. F. Martins, "Ultra-long ϕ-OTDR Assisted by Modulated Second-order Raman Amplification," in OSA Optical Sensors and Sensing Congress 2021 (AIS, FTS, HISE, SENSORS, ES), S. Buckley, F. Vanier, S. Shi, K. Walker, I. Coddington, S. Paine, K. Lok Chan, W. Moses, S. Qian, P. Pellegrino, F. Vollmer, G. , J. Jágerská, R. Menzies, L. Emmenegger, and J. Westberg, eds., OSA Technical Digest (Optica Publishing Group, 2021), paper STu2B.4.

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Abstract

Second order Raman amplification with engineered amplitude modulation is proposed for ϕ-OTDR, leading to trace visibility improvement by 6-dB beyond 50 km and a measurement range increase of 10 km.

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