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Temperature Distribution Measurement Using Raman Ratio Thermometry
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1986
Year
Optical MaterialsEngineeringMeasurementOptical TestingEducationConventional Optical FibreCalibrationOptical PropertiesThermal AnalysisRaman SpectrumThermodynamicsInstrumentationOptical SpectroscopyReflectancePhotonicsFiber Optic SensingBackscattered LightSpectroscopyTemperature MeasurementApplied PhysicsThermal SensorThermal EngineeringOptical Sensor
A novel optical time domain reflectometry technique is described which uses the Raman Spectrum of backscattered light to give the temperature distribution along a conventional optical fibre. Temperatures from 77K to 800K can be measured. Spatial resolution is better than 3m, with sensor lengths of up to lkm.