Nonlinear amplification in φ-OTDR for distributed acoustic sensing

L. Rossi; L. K. Cheng; W. De Jong; R. Jansen; G. Bolognini

doi:10.1117/12.2679397

23 May 2023 Nonlinear amplification in φ-OTDR for distributed acoustic sensing

L. Rossi, L. K. Cheng, W. De Jong, R. Jansen, G. Bolognini

Proceedings Volume 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023); 126431U (2023) https://doi.org/10.1117/12.2679397
Event: European Workshop on Optical Fibre Sensors (EWOFS 2023), 2023, Mons, Belgium

Abstract

A low-noise φ-OTDR sensor is developed by adding a 2-stage pre-amplification system mixing linear and nonlinear amplification in a 3x3 Michelson interferometric configuration. Its performance is evaluated by deploying it as a distributed acoustic sensing system in a survey well (sampling rate: 10 kHz), showing noise floor levels below 1 nε

Citation Download Citation

L. Rossi, L. K. Cheng, W. De Jong, R. Jansen, and G. Bolognini "Nonlinear amplification in φ-OTDR for distributed acoustic sensing", Proc. SPIE 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023), 126431U (23 May 2023); https://doi.org/10.1117/12.2679397

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