Stimulated Brillouin effect-based differential temperature sensor
A technology of stimulated Brillouin and temperature sensors, which is applied in the direction of physical/chemical change thermometers, thermometers, instruments, etc., can solve the problems of limited sensing distance, limited spatial resolution, reduced frequency resolution, etc., to achieve The effect of high frequency resolution, high spatial resolution, and long measurement distance sensing
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[0038] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0039] figure 1 The structure block diagram of a differential temperature sensor based on stimulated Brillouin effect proposed for the present invention, such as figure 1 Shown, including:
[0040] Light generating unit 1, first modulation amplifying unit 2, second modulation amplifying unit 3, filter 4, delay fiber 5, 3dB coupler 6, po...
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