Raman sensing temperature measurement system in double-end injection annular structure, and Raman sensing temperature measurement method
A technology of Raman sensing temperature measurement and ring structure, applied in the field of temperature measurement system, can solve the problems of not being able to fully and truly reflect the temperature information along the optical fiber, increasing temperature measurement error, slow measurement error, etc.
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[0061] Please check figure 1 , in order to eliminate the influence of the optical fiber loss factor described in the background technology on temperature measurement, the present invention adopts a double-end injection ring structure to build a double-end injection ring structure Raman sensing temperature measurement system, the system includes a light source, a wavelength division multiplexer The light source is connected with the optical signal of the wavelength division multiplexer, the optical signal of the photoelectric conversion module is connected with the optical signal of the wavelength division multiplexer and the electrical signal of the data acquisition and processing module; It includes a 1x2 optical switch, the first and last ends of the sensing fiber are respectively connected to the 1x2 optical switch and the sensor optical fiber is arranged in a ring structure, the wavelength division multiplexer is connected to the 1x2 optical switch, and the 1x2 optical swit...
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