Dual edge element can easily treat anisotropic media and solve different problems in uniform formulation, and has merits in numerical precision and computation for high order modes when compared with conventional edge element.

• 对偶棱边元方法易于处理各向异性材料,并可以统一地解决电磁波导的多个课题,与常规的棱边元方法相比在数值精度、高次模的计算等方面具有一定的优势。