OpticalfiberCurrentSensor(OCS)utilizingtheFaradayeffectmeasurespowerelectricA.Ccurrent.TheOCShasthefollowingfeatures,Compactandweightlight,Easytoinstall,Highinsulationproperty,Immunefromelectromagneticnoise,Measurementoflargecurrent,High-speedresponse,Longdistancesignaltransmission.TheOCSgetstheadoptioninvariousfieldssuchastheelectricpower,cars,andrailways.TheOCSincludesthefollowingtechnologies,polishing,opticalthinfilm,andpreciseAssembling.