Brillouin scattering based distributive fiber sensing system
A Brillouin scattering and distributed optical fiber technology, applied in the field of fiber lasers and optical fiber sensing, can solve problems such as poor measurement accuracy, and achieve the effects of simple devices, reduced complexity, and cost savings
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[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0028] figure 1 It is a structural schematic diagram of the optical fiber sensing system based on Brillouin scattering of the present invention. The optical fiber sensing system includes a Brillouin fiber ring laser A and a distributed Brillouin fiber sensor B. The remaining pump light output by the Brillouin fiber ring laser is input into the distributed Brillouin fiber sensor as detection light, and the output laser is used as the local oscillator light of the distributed Brillouin fiber sensor. The detection light is input into the sensing fiber of the distributed Brillouin fiber sensor, and the backscattered light containing temperature and strain information is obtained, which is mixed with the local oscillator light to obtain the required temperature and strain information.
[0029] The Brillouin fiber ring laser A includes a...
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