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The aim of this chapter is to attempt an optimized design from horizontal and vertical core spiral photonic crystal fiber with the use of various photonic materials. Here we tried to design this spiral PCF for three PCF materials like chalcogenide glass, borosilicate crown glass and silica glass. The four designs have been proposed with all these selected materials to get the optimized result. The aim of the proposed design is to get low dispersion profile, low confinement loss and better transmission curve in both the spiral PCF structures. For this purpose we have used Opti Finite Difference Time Domain (FDTD) with transparent boundary conditions (TBC). In this design initially the core region is selected in horizontal elliptical shape, while the cladding part is maintained in circular shape. Later on the elliptically core is converted into vertical direction keeping the cladding region in circular shape. The core diameter is maintained at 0.25 μm and 0.5 μm with minor and major axes,while the cladding diameter varied from 0.5 μm to 1.25 μm. The design so obtained faced many conflictions during simulation process but after setting the parameters in appropriate manner, we got the optimized results and it also maintained the refractive index of the material selected using Sellmeier equation.

Design Optimization to Analyze Elliptical Core Spiral Photonic Crystal Fiber with Improved Optical Properties