用于分布式声传感的φ-OTDR非线性放大

European Workshop on Optical Fibre Sensors Pub Date : 2023-05-23 DOI:10.1117/12.2679397

L. Rossi, L. Cheng, W. de Jong, R. Jansen, G. Bolognini

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引用次数: 0

摘要

低噪声φ-OTDR传感器是通过在3x3迈克尔逊干涉配置中添加2级预放大系统混合线性和非线性放大而开发的。通过将其作为分布式声学传感系统部署在一口调查井中(采样率:10 kHz)来评估其性能，显示噪声底值低于1 ne ε

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Nonlinear amplification in φ-OTDR for distributed acoustic sensing

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

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European Workshop on Optical Fibre Sensors

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