W型单模单偏振光纤隧道效应的模场分析

Mode Field Analysis of Tunneling Effects in W-Tunneling Optical Fibers

给出了W型单模单偏振光纤基模模场在截止前、截止时和截止后的具体计算方法。利用基模模场分析了W型单模单偏振光纤隧道效应发生的过程、强弱和方向 ,得出了W型单模单偏振光纤隧道效应随其基模的截止而显著增强、并且主要集中在椭圆内包层短半轴方向的结论。

The numerical method to calculate fundamental modes of W-Tunneling optical fibers is given. By using field distribution of the fundamental modes, the tunneling process, strength and direction are analysed. It is found that the tunneling effects increase remarkably when the fundamental modes are cutoff, and they are concentrated mainly in the direction of the semiminor axes of the elliptical inner cladding.