A dual-parameter optical fiber sensing device for monitoring magnetic field and temperature and its implementation method
A technology of optical fiber sensing and implementation method, which is applied to measurement devices, uses optical devices to transmit sensing components, and converts sensor outputs, etc., can solve the problems of affecting sensitivity, poor long-term operation stability, and low measurement accuracy, and achieve cross-influence. The possibility of reducing the weight of the inspection equipment and increasing the accuracy of the measurement
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[0033] The following embodiments will describe the specific implementation of a dual-parameter optical fiber sensing device for monitoring magnetic field and temperature proposed by the present invention with reference to the accompanying drawings.
[0034] Such as figure 1 As shown, the present invention provides a structural diagram of a dual-parameter optical fiber sensing device for monitoring magnetic field and temperature. The ASE light source (1) emits a light beam that is transmitted to the fiber coupler (2), and the output beam of the fiber coupler (2) is transmitted to The sensing unit (3), the light beam is reflected and transmitted in the sensing unit (3), when the sensing unit (3) is placed in the magnetic field module (4) to be measured, the sensing unit (3) is in the magnetic field to be measured The magnetostrictive ring (3-3) in the module (4) expands and contracts, and the air F-P cavity changes, which affects the optical path of the reflected light, thereby ...
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