The Polarization Properties Of The Magneto-optical Glass Fiber Current Sensor Applications

The polarisation proPerties magneticoptic giass is introduced andutilized in the OPtical-fiber current sensor in the paPeL,' MagneticoPtic glass plays an driportant role in oPtical fiber sensors. Inthis article we intrOduce itS working Principle and theOries concemed. WthZF1 magnetic-optic glass as core and material III as coat, we drew bareoPtic fiber and with coat, and then put them intO HelmhotZ coil inspective.When introduced with linear-polarzed light, the intensity of the magneticfield can be calculated by measuring the outPut light signal. In this way wecan easily mOnitor large electricity current and magIletic field accuratelyBecause Of the complexity of coupling in modes ProPagating in opticalwave-gUide, the loss of light intensity is out of eliminable. The loss willbe decreased by using single-mode fiber or Poledzation holding fiberIn recent work we measured the Verdet constant of the samples andtested the chederistic of magnetic-optical glass bare fibeL Then, weanalyzc the resource of ermrs, which are coupling effect, stability of thelight source, polarizers, defects of the magnetic-oPtical glass flber andcoupling effects betWeen different modes. In this way we designed tWo1dllds of t1le light detection fOr oPtical-fiber current sensof, and finallyd(7cribe further aPplications in POWr system.