OPTICAL FIBER DISTRIBUTION MEASUREMENT SYSTEM AND SIGNAL PROCESSING METHOD FOR OPTICAL FIBER DISTRIBUTION MEASUREMENT

The invention relates to a signal processing method for optical fiber distribution measurement, using an optical fiber distribution measurement system (100), the method comprising: with use of two kinds of signals that are an elastic wave measurement signal obtained by analyzing a phase shift of Ray...

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Bibliographic Details
Main Authors GHAZALI, Ahmad Riza, KISHIDA, Kinzo, ABD RAHIM, Mohamad Faizal bin
Format Patent
LanguageEnglish
French
German
Published 11.09.2024
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Summary:The invention relates to a signal processing method for optical fiber distribution measurement, using an optical fiber distribution measurement system (100), the method comprising: with use of two kinds of signals that are an elastic wave measurement signal obtained by analyzing a phase shift of Rayleigh scattering light measured in a measurement time of 1 millisecond or less, and a temperature-strain distribution measurement signal obtained by analyzing a frequency shift of Rayleigh scattering light measured in a measurement time of 30 seconds or more by tunable wavelength coherent optical time domain reflectometry, calculating the phase error from the temperature-strain distribution measurement signal, and correcting the elastic wave measurement signal by the phase error.
Bibliography:Application Number: EP20240166968