中文摘要：

本文用有效折射率模型,分析了双模光子晶体光纤的模间干涉特性,理论结果与实验测量符合得相当好,并且预言了模间于涉精细结构的存在,对相关的高精度测量具有重要的应用价值。

英文摘要：

Characteristics of modal interference of two-mode photonic crystal fibers is discussed by using effective-index model.The theoretical result is agreed well with the experiment measurement.More important,the fine structure of intermodal interference is predicted.It has an important practical usage in the high precise measurement.