光程、费马原理和光纤的模式色散

OPTICAL PATH,FERMAT'S PRINCIPLE AND INTERMODAL DISPERSION

利用光程概念和费马原理，对光波导理论中的光纤模式色散问题给出了一种新的处理方法，它比起传统的ＷＫＢＪ法，不仅数学处理简单，而且物理意义更突出．结合该问题的讨论，本文还对普通物理课内容设置提出了一些建议．

A new method for discussion of intermodal dispersion in optical fiber is proposed on the basis of concept of optical path and Fermat’s principle, with simpler calculation and more explicit physical meaning comparing with conventional WKBJ solution .Some suggestions in establishment of university physics course are also made.