Experimental and theoretical investigations concerning the magnetooptic effects in special D-type fibres

Abstract
This paper deals with investigations concerning special fibres of the D-type. A structure of these fibres was designed for the purpose of making them sensitive to the magnetic field. The presented fibres are birefringent and their polarisation characteristics change in the magnetic field. The results of these investigations have confirmed that the sensitivity of these fibres is two times in order higher then sensitivity of typically used step-index fibres. The numerical analysis of the polarisation properties of the presented fibres has also been presented.