带隙型光子晶体光纤及其分析方法

光子晶体光纤是近年来出现的一种新型光纤，其特点是包层排列有规则或随机分布的波长量级的空气孔。包层中的微结构使得光子晶体光纤能够呈现出许多传统光纤不具备的特性，其在光通信领域具有极大的应用前景。文章从光子晶体的概念出发，概述了光子晶体的特征，通过引入光子晶体光纤的概念，介绍了光子带隙型与全内反射型光子晶体光纤的基本结构及导光原理。同时文章简要分析了带隙型光子晶体光纤的各种主要理论研究方法，并对其做出了相应的评价。

Theoretic Methods of Photonic-bandgap Photonic Crystal Fiber

A new type of fiber, known as photonic crystal fiber, has emerged in the past several are characterized by wavelength-scale air holes running along the entire fiber length in the cladding years. These fibers region, which have resulted in some unusual properties compare with conventional optical fibers. Therefore, it has great potential in the field of optical communication.Based on the concept of photonic crystal, the characters of photonic crystal are briefly summarized. Through the concept of photonic crystal fiber, we also introduced the structure and light guiding principle of photonic-bandgap PCF and modified total internal reflection PCF respectively. The paper analyzed briefly various research methods about photonic-bandgap photonic crystal fiber and finally made a comprehensive evaluation.