Brillouin Optical Time Domain Analysis (BOTDA)-based sensing device and method
A technology of optical time domain analysis and supercontinuum, applied in the field of sensing devices based on supercontinuum Brillouin optical time domain analyzer, can solve problems such as high cost, time-consuming, complex system structure and implementation process, and achieve Improve reliability and stability, improve signal-to-noise ratio, and adjust spatial resolution
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[0028] A sensing device based on a supercontinuum Brillouin optical time domain analyzer, comprising a supercontinuum light source 1, a first tunable optical filter 2, a 1×2 first fiber coupler 3, and a first polarization controller 4. Microwave signal source 5, first high-speed electro-optic modulator 6, first optical amplifier 7, optical scrambler 8, optical isolator 9, sensing fiber 10, second polarization controller 11, second high-speed electro-optic modulator 12. Pulse generator 13, 1×2 second fiber coupler 14, second optical amplifier 15, optical circulator 16, third optical amplifier 17, 1×2 third fiber coupler 18, second tunable optical filter device 19, a third tunable optical filter 20, a first photodetector 21, a second photodetector 22, a third photodetector 23, a data acquisition card 24, and a computer 25.
[0029] Wherein, the outgoing end of supercontinuum light source 1 is connected with the incident end of first tunable optical filter 2; The incident end of...
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