STUDY OF DISPERSION CURVES IN M-TYPE TRIPLE CLAD SINGLE MODE OPTICAL FIBER

In this paper the dispersion curves of M-type triple clad (4-layer) single mode optical fiber is analytically studied. Here in the presented work mo dal analysis of this fiber is done. Firstly the eigen value equation is derived for triple clad single mode fiber using Maxwell’s equation for electromagnetic and by applying boundary conditions (LP approximation method) and then it is shown that how the single mode operation is dependent upon the order of the modes. Using numerical evaluation of the presented analytical relations, normalized frequency and normalized propagation constant are calculated. Then using these parameters, dispersion curves are drawn. Finally it is seen that all the curves have standard expected shape which means that the standard shifted M-type circular waveguide does not change i n the standard shape of dispersion curve.