New Designs and Analysis of Multi-Core Photonic Crystal Fiber Using Ellipse with Different Radiuses and Angles

Abstract

In this paper, a new design of a photonic crystal fiber with hexagonal geometry supporting multi-core in cladding is proposed. The dimension of fiber is assumed as 50 µm × 50µm. In this design, 37 circles surrounded by air ellipse were utilized. In order to compare and design, four cases have been studied with different air filling ratios, different radiuses, and different pitch values. The different optimized values used in this design are R1 = 0.26 µm, R2 = 1 µm, R3 = 0.30 µm, and R4 = 1.4 µm. These are structure designs by two pitch values ʌ = 1.3 and ʌ = 1.6. Wavelength is 0.7–1.8 µm. The three different angles used in these structures are <45°, <135°, and <180°. With a constant refractive index, uniform electric field distribution is obtained. The four cases consisting of holes and pipes have been designed to meet the requirements like large mode area (LMA), confinement loss, birefringence highly nonlinear fiber, electric field distribution with polarization in core region and waveguide, etc. The mode field leakage to cladding. We compared the simulated PCF with other published work.