Numerical Modelling of a Distributed Acoustic Sensor Based on Ultra-Low Loss-Enhanced Backscattering Fibers
Lieke Dorine van Putten, Ali Masoudi, James Snook, Gilberto Brambilla
Abstract
In this study, a distributed acoustic sensor (DAS) was numerically modeled based on the non-ideal optical components with their noises and imperfections. This model is used to compare the response of DAS systems to standard single-mode fibers and ultra-low loss-enhanced backscattering (ULEB) fibers, a fiber with an array of high reflective points equally spaced along its length. It is shown that using ULEB fibers with highly reflective points improves the signal-to-noise ratio and linearity of the measurement, compared with the measurement based on standard single-mode fibers.
Topics & Concepts
Optical fiberSingle-mode optical fiberMaterials scienceLinearityFiberAcoustic sensorAcousticsFiber optic sensorOpticsNoise (video)Distributed acoustic sensingElectronic engineeringComputer sciencePhysicsEngineeringComposite materialImage (mathematics)Artificial intelligenceAdvanced Fiber Optic SensorsStructural Health Monitoring TechniquesSeismic Waves and Analysis