Dual wavelength distributed temperature sensing with built-in fiber integrity monitoring

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United States of America Patent

PATENT NO 11860041
SERIAL NO

17566361

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Abstract

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In some examples, a temperature distribution sensor may include a laser source to emit a laser beam that is tunable to a first wavelength and a second wavelength for injection into a device under test (DUT). A first wavelength optical receiver may convert a return signal corresponding to the first wavelength with respect to Rayleigh backscatter or Raman backscatter Anti-Stokes. A second wavelength optical receiver may convert the return signal corresponding to the second wavelength with respect to Rayleigh backscatter or Raman backscatter Stokes. Bending loss associated with the DUT may be determined by utilizing the Rayleigh backscatter signal corresponding to the first wavelength and the Rayleigh backscatter signal corresponding to the second wavelength. Further, temperature distribution associated with the DUT may be determined by utilizing the Raman backscatter Anti-Stokes signal corresponding to the first wavelength and the Raman backscatter Stokes signal corresponding to the second wavelength.

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Patent Owner(s)

Patent OwnerAddress
VIAVI SOLUTIONS INC1445 SOUTH SPECTRUM BLVD SUITE 102 CHANDLER AS 85286

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Champavere, Andre Saint-Bonnet les Oules, FR 19 25

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