Negative dispersion with high birefringence Photonic Crystal Fiber and its propagation properties

Pranaw Kumar, Ranjitarani Behera
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引用次数: 9

Abstract

In this paper we show a comparison of two hexagonal geometries of Photonic Crystal Fiber (PCF). These geometries are different with respect to the area of circular air holes. The area of circular air holes is kept fixed for a structure and is kept decreasing with increase in number of rings for another structure. Both structure considered consists of seven rings. One of the PCF structure with decreasing area of circular air holes report negative dispersion for wide range of wavelength. The birefringence of PCF structure with decreasing area of circular air hole is high compare to that of other PCF structure investigated. The confinement Loss reported is of the order of 10-5 for both the PCF structure in this paper. The confinement factor was reported to be uniform for all the structures in this paper. The mode field pattern for both the structures appears to be a flower like shape with entire field being concentrated in the core and without leakage to cladding. The far field pattern (FFP) is also observed for both the structures.
高双折射光子晶体光纤负色散及其传输特性
本文对光子晶体光纤(PCF)的两种六角形结构进行了比较。这些几何形状在圆形气孔的面积方面是不同的。对于一种结构,圆形气孔的面积保持固定,对于另一种结构,圆形气孔的面积随着环数的增加而减小。这两种结构都由七个环组成。一种圆形气孔面积减小的PCF结构在宽波长范围内呈现负色散。随着圆形气孔面积的减小,PCF结构的双折射率比其他PCF结构高。本文所报道的两种PCF结构的约束损失均为10-5数量级。本文报道了所有结构的约束因子是均匀的。两种结构的模场模式均呈花状,整个模场集中在堆芯内,没有泄漏到包层。两种结构的远场模式(FFP)也被观测到。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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