A free-winding optical fiber current sensor sensitive coil and manufacturing method
A technology of optical fiber current and sensitive coils, applied in the direction of measuring current/voltage, instruments, measuring electrical variables, etc., can solve the problems of unfavorable transportation and installation, no variable shape, etc., and achieve space saving, easy transportation, and tensile strength high effect
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[0034] Such as image 3 , 4 As shown, the sensitive coil of the optical fiber current sensor of the present invention includes an optical path main body composed of a polarization maintaining optical fiber 3, a λ / 4 wave plate 4, a sensitive optical fiber 8 and a reflector 9, an optical fiber protective sleeve 2, a capillary 6, a reinforced plastic matrix 11, an inner The sheath 12 and the outer sheath 13, wherein the polarization-maintaining optical fiber 3 is protected by the optical fiber protective sheath 2, the sensitive optical fiber 8 is covered with a capillary 6, the capillary 6 is filled with a lubricant 7, and the ports at both ends of the capillary 6 are sealed by the colloid 5, The two ends of the sensitive optical fiber 8 are respectively connected to one end of the λ / 4 wave plate 4 and the mirror 9, the other end of the λ / 4 wave plate 4 is connected to the polarization-maintaining optical fiber 3, and the main body of the optical path is fixed in the reinforced p...
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