High-sensitivity wide-frequency-response all fiber microseism monitoring system
A microseismic monitoring, all-fiber technology, used in measuring devices, seismic signal receivers, measuring ultrasonic/sonic/infrasonic waves, etc. problem, to achieve the effect of non-destructive acquisition, high sensitivity, and optimized sensitivity
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[0023] see figure 1 , a high-sensitivity wide-frequency response all-fiber microseismic monitoring system disclosed in the present invention consists of a laser light source 1 for generating laser light, a sensing probe 3 for picking up microseismic signals, and a signal demodulator for demodulating microseismic signals 4 is composed of an incident optical fiber 201 connected to the laser light source 1 and a reflective optical fiber 202 connected to the signal demodulator 4 at one end, and the sensing probe 3 is filled with an oily liquid 305 of simethicone.
[0024] The sensor probe 3 includes a cylindrical packaging shell 301 and a top cover 307 that is threadedly connected thereto, is packaged in the packaging shell 301 and is connected to the other end of the incident optical fiber 201 and the reflecting optical fiber 202. The connected optical fiber coupler 2, the reference arm optical fiber 204 and the sensing arm optical fiber 205 drawn out from the optical fiber coupl...
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