A grating sensing device and method based on Brillouin filter
A grating sensing and filter technology, which is applied in the direction of using optical devices to transmit sensing components, measuring devices, converting sensor outputs, etc. The effect of simple system structure
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[0037] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
[0038] Such as figure 1 Shown is a schematic structural diagram of the grating sensing system based on the Brillouin filter of the present invention, a grating sensing device based on the Brillouin filter, including a broadband light source, a first circulator, a sensing fiber grating, a Brillouin A filter, a synchronous signal module, a photodetector and a signal acquisition and processing module, the Brillouin filter includes an optical fiber section that produces the stimulated Brillouin scattering SBS effect, and a second circulator and a narrow linewidth tunable light source; wherein,
[0039] A broadband light source, used to output a wide-spectrum continuous signal light to the first port A of the first circulator;
[0040] The first circulator is used to output the wide-spectrum continuous signal light from its second port B to the sensing...
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