Three-order Raman amplification technology-based Brillouin optical time domain analysis system
A technology of optical time domain analysis and technology, applied in the direction of using optical devices, thermometers with physical/chemical changes, and using optical devices to transmit sensing components, etc., can solve low signal-to-noise ratio areas, affect the consistency of sensing quality, Signal light distribution fluctuations and other issues, to achieve the effect of improving spatial resolution, improving the consistency of the whole process, and improving the sensing performance
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[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0022] see figure 1 , a Brillouin optical time-domain analysis system based on third-order Raman amplification technology, including a laser 1, a first isolator 2, a coupler 3, a first polarization controller 4, a second polarization controller 16, a first electro-optic modulation Device 6, second electro-optic modulator 17, polarization scrambler 8, first erbium-doped fiber amplifier 9, second erbium-doped fiber amplifier 18, optical circulator 12, detector 10, tunable filter 11, data acquisition and processing system 7. Waveform generator 5, microwave generator 13, third-order Raman amplification system, wherein the laser 1 is used to generate Brillouin pump waves and detection waves, the line width of the light source is 1KHz, output polarization < 5%, there are two erbium-doped fiber amplifiers, the first erbium-doped fiber amplifier 9 is ...
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