Investigation of the single equivalent model of double step-index waveguide in TE mode

In this work, the variations of the fields in the regions of double symmetric step-index waveguide are studied and basic design parameters are calculated. The double waveguide and the single equivalent model of double symmetric step-index waveguide in TE mode are investigated. The equivalent index is found for active region and equivalent single step-index waveguide is obtained. Important parameters which are the function of normalized propagation constant for each step-index waveguide are calculated.