FIELD: measuring equipment.
SUBSTANCE: device is proposed for a fiber-optical measurement of temperature and/or tension based on Brillouin scattering, comprising at least one laser light source (1) configured to emit laser radiation, an optical fiber (5) into which laser radiation is introduced and from which the Brillouin signal generated on the basis of the Brillouin scattering is derived. The device also comprises sensors detecting the outputted Brillouin signals, data processing means determining the local temperature and/or tension of at least the portions of the optical fiber (5) based on the detected Brillouin signals, at least one optical polarisation separator (10, 11) beam separating the derived Brillouin signals into two components (12, 13) with a different polarisation, at least one optical combiner (16, 17), adding a laser radiation to the Brillouin signal.
EFFECT: improved accuracy of the data.
13 cl, 3 dwg
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