Distributed optical fiber temperature sensor

• Main Authors: HE ZUYUAN, LUO RUIDONG, CHEN JIAGENG
• Format: Patent
• Language: Chinese; English
• Published: 25.04.2023
• Subjects: MEASURING; MEASURING QUANTITY OF HEAT; MEASURING TEMPERATURE; PHYSICS; TESTING; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR

The invention relates to a distributed optical fiber temperature sensor, which comprises an intensity coding light source unit for outputting a detection light signal according to a modulation code pattern; the optical wavelength division multiplexer is used as a light guide unit and comprises a detection light input end, a sensing optical fiber input and output end, a Stokes light output end and an anti-Stokes light output end, the detection light input end is connected with the output of the strength coding light source unit, the sensing optical fiber input and output end is connected with the sensing optical fiber, and the anti-Stokes light output end is connected with the output of the strength coding light source unit. The Stokes light output end and the anti-Stokes light output end are connected with the photoelectric detection unit; a sensing optical fiber; a photoelectric detection unit; the input of the signal acquisition unit is connected with the output of the photoelectric detection unit, and the