Device and Method for Spatially Resolved Measurement of Temperature and/or Strain by Brillouin Scattering

摘要

Device for spatially resolved measurement of temperature and/or strain by Brillouin scattering, with a laser light source (1) for generating a laser radiation, an optical fiber (5) used for the measurement, into which the laser radiation can be coupled in and from which Brillouin signals generated by Brillouin scattering can be coupled out, sensors for detecting the coupled-out Brillouin signals, evaluators for determining spatially resolved from the detected Brillouin signals the temperature and/or strain of sections of the optical fiber (5), a polarization beam splitter (10, 11) capable of splitting the coupled-out Brillouin-signals into two components (12, 13) having mutually different polarizations, and an optical coupler (16, 17) for admixing a laser radiation to the Brillouin signal.

主权项

1. A device for spatially resolved measurement of temperature and/or strain by Brillouin scattering, comprising
at least one laser light source (1) configured to produce laser radiation, an optical fiber (5) used for the measurement, into which the laser radiation can be coupled in and from which the Brillouin signals generated based on the Brillouin scattering can coupled out, sensors configured to capture the coupled-out Brillouin signals, evaluator configured to determine spatially resolved from the captured Brillouin signals the temperature and/or strain at least of sections of the optical fiber (5), at least one optical polarization beam splitter (10, 11) configured to split the coupled-out Brillouin signals into two components (12, 13) with mutually different polarizations, at least one optical coupler (16, 17) configured to admix to the Brillouin signal a laser radiation.