Novel venus photonic crystal fiber structure with low loss over S+C+L+U wavelength bands and large negative dispersion

摘要

In the era of modern optical communication, a new types of fiber known as Photonic Crystal Fiber (PCF) has entered as an emerging research area with its unique and splendid optical properties and design flexibility. PCF structures are composed of an arrangement of holes where different position or diameter of these holes is liable for different optical properties. In the past study, researchers have proposed several regular or irregular structures with different shapes like Hexagonal, Octagonal, Circular, Spiral, Honeycomb etc. due to its enormous design flexibility. In this research, a novel PCF structure of Venus geometry is proposed and optical properties like confinement loss and dispersion are extracted. For design and simulation purpose of the proposed structure, COMSOL Multiphysics software is used. For better light confinement in any cladding holes, defect is created using perturb material and low confinement loss is obtained within S+C+L+U wavelength bands. Variations in cladding holes made the proposed fiber to exhibit large negative dispersion within the wavelength range 1.5pm to 1.7pm This structure would be a promising candidate for long distance secure data transmission, Wavelength Division Multiplexing (WDM), ass Dispersion Compensating Fiber (DCF) and other telecommunication applications.