Highly Nonlinear and Low Confinement Loss Photonic Crystal Fiber Using GaP Slot Core

Abstract: This paper presents a triangular lattice photonic crystal fiber with very high nonlinear coefficient. Finite element method (FEM) is used to scrutinize different optical properties of proposed highly nonlinear photonic crystal fiber (HNL-PCF). The HNL-PCF exhibits a high nonlinearity up to $10\times10^{4} W^{-1}km^{-1}$ over the wavelength of 1500 nm to 1700 nm. Moreover, proposed HNL-PCF shows a very low confinement loss of $10^{-3} dB/km$ at 1550 nm wavelength. Furthermore, chromatic dispersion, dispersion slope, effective area etc. are also analyzed thoroughly. The proposed fiber will be a suitable candidate for broadband dispersion compensation, sensor devices and supercontinuum generation.