The Effect of Hole Radius on The Properties of Large Pitch Photonic Crystal Fiber

Rasha Abdulaziz Faris Abdulghafor Ibrahim Abdullah

doi:10.33899/edusj.2011.51503

Abstract

Three proposals of large pitch (Λ=5µm) photonic crystal fibers (PCFs) are studied. The effect of air hole radius on the properties of the fundamental mode of these fibers are considered. All the parameters of the proposed structured were kept constant except the hole radius were varied 0.5, 0.8, and 1.0μm for the PCF1, PCF2 and PCF3 respectively.

Highlights

Photonic crystal fibers (PCFs), called holey fiber (HF) or microstructured optical fibers (MOFs), constitute a new class of photonic crystal waveguides were proposed in 1992
In comparison with conventional optical fibers, guided propagation of the electromagnetic field in the PCFs is achieved by the introduction of defects
It is an important characteristics of an optical fiber showing its gathering ability of the incident light over wide range of angles, for PCFs the NA is given as the following [2]

Summary

1- Introduction

Photonic crystal fibers (PCFs), called holey fiber (HF) or microstructured optical fibers (MOFs), constitute a new class of photonic crystal waveguides were proposed in 1992. In comparison with conventional optical fibers, guided propagation of the electromagnetic field in the PCFs is achieved by the introduction of defects These defects form a periodic pattern of air holes in regular triangular lattice, around a silica core, and acts as a cladding of the PCF[2]. The numerical aperture, effective area, nonlinear coefficient, dispersion, flattened dispersion, dispersion slope and zero dispersion wavelength parameters are needed for some particular applications Such characteristics, under the effect of the hole radius and constant large pitch size, will be the aim of this study. The special aspect of PCFs is that with increasing wavelength, the effective cladding index is decreases, this serving the offset the increase in V-value This means PCFs can offer single mode operation from the visible to infrared region.

Numerical Aperture NA

Nonlinear Effect in PCFs and Nonlinear coefficient γ

3- Results and Discussion

4- Conclusions

5- References