Seawater salinity and temperature detection device based on double-bend long-period fiber bragg grating and use method
A technology of temperature detection device and optical fiber grating, which is applied in the field of temperature detection device and seawater salinity, can solve the problems of high price, easy damage, and difficult realization, and achieve the effect of improving system measurement accuracy, sensitivity, and portability
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[0034] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, and Not all of the embodiments; based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0035] Such as figure 1 As shown, it is a demodulation system for seawater salinity temperature detection based on double-curved LPFG, which mainly includes ASE broadband light source 1, F-P filter 2, optical splitter 3, first LPFG4, second LPFG5, third LPFG6, photoelectric Detector 7, signal conditioning circuit 8, FPGA 9, computer 10, sawtooth wave signal 11. The ASE broadband light source 1 is connected to the ...
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