Nonlinear Characteristics of Square Solid-Core Photonic Crystal Fibers With Various Lattice Parameters in the Cladding

Abstract

Nonlinear characteristics of fused silica, solid-core photonic crystal fibers (PCFs) with a square array of air holes are studied numerically. We present a novel design that emphasizes the difference in air hole diameters in the photonic cladding. These PCFs have the advantages of flat dispersion, high nonlinearity, and low attenuation. Based on simulation results, three optimal structures, denoted #F1, #F2, and #F3, having anomalous and all-normal dispersions in the near-infrared range are selected to investigate characteristic properties at the pump wavelength. Such PCFs open up many possibilities for nonlinear optical applications, especially supercontinuum generation.

Structure optimization of large-solid-core photonic crystal fibers based on Ge\(_{20}\)Sb\(_{5}\)Se\(_{75}\) for optical applications

“…In addition, the structures we have chosen not only have near-zero dispersion, small gradients, the flat spectrum stretches in the infrared region but also their loss is small. Compared to recent publications such as studying square lattice structures with As 2 Se 3 substrate [32] or SiO 2 substrate [33] or hexagonal lattice using Ge 20 Sb 5 Se 75 substrate [31] as show in Table 4. Fiber #F1 with all-normal dispersion has a dispersion curves closest 0 than fibers in [32,33] and flatness dispersion curves than fibers in [31,33].…”

“…Compared to recent publications such as studying square lattice structures with As 2 Se 3 substrate [32] or SiO 2 substrate [33] or hexagonal lattice using Ge 20 Sb 5 Se 75 substrate [31] as show in Table 4. Fiber #F1 with all-normal dispersion has a dispersion curves closest 0 than fibers in [32,33] and flatness dispersion curves than fibers in [31,33]. In the case of fiber #F2, the fiber has the smallest dispersion value at the pump wavelength compared to the fibers in [31][32][33].…”

“…Fiber #F1 with all-normal dispersion has a dispersion curves closest 0 than fibers in [32,33] and flatness dispersion curves than fibers in [31,33]. In the case of fiber #F2, the fiber has the smallest dispersion value at the pump wavelength compared to the fibers in [31][32][33].…”