Linear multi-channel fiber acoustic vibration sensing device and method
A vibration sensing and vibration sensor technology, applied in measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve the problems of large number of transmission fibers, complicated maintenance and layout, and sensors cannot be directly connected in series, so as to improve the multiplexing. degree, reduce wastage, and improve the effect of utilization
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[0034] The present invention will be further described in detail below in combination with specific embodiments.
[0035] Such as image 3 As shown, a linear multi-channel optical fiber acoustic vibration sensing device of the present invention includes: a light source 13, a transmission optical fiber 16, N miniature all-fiber relay multiplexers 14, 15, ... , 17, N≤64; N optical fiber acoustic vibration sensors 10 and an optical signal analyzer 18 . in:
[0036] Light source 13: SLD light source or ASE light source that provides a wide spectrum, and the working band is 1310nm or 1550nm;
[0037] Transmission optical fiber 16: used to connect the light source in the optical fiber acoustic vibration sensing device, the miniature all-fiber relay multiplexer and the optical signal analyzer;
[0038] N miniature all-fiber relay multiplexers 14, 15, ..., 17, N≤64, each miniature all-fiber relay multiplexer has three ports, one of which is used to connect the fiber optic acoustic ...
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