Optics Letters · 1994 · 156 citations · 4 references
EngineeringElectrical EngineeringOptoelectronicsPhotonicsSensorsFiber OpticsOptical FibersOptical SensingOptical SensorsStrain MeasurementStrain SensorsDistributed Strain SensingFiber-optic SensingFiber-optic Temperature SensorsHigh-resolution Strain MeasurementOptical Fiber SensorsOptical Fiber Strain SensingOptical Fiber Strain SensorsStrain Resolution
We present a novel distributed sensor that utilizes the temperature and strain dependence of the frequency at which the Brillouin loss is maximized in the interaction between a cw laser and a pulsed laser. With a 22-km sensing length, a strain resolution of 20 μ∊ and a temperature resolution of 2 °C have been achieved with a spatial resolution of 5 m.
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