摘要
利用转移矩阵理论分析了任意折射率分布平板波导的传输特性，导出了非均匀平板波导的近似解析色散方程，并指出了ＷＫＢ近似的局限性．数值比较的结果表明，文中所得公式的精确度优于传统的ＷＫＢ方法和其它近似方法．
A new method for obtaining the analytical dispersion characteristics of planarwaveguides with arbitrary refractive index profile is presented. The method is based onthe transfer matrix theory and a new interpretation of the WKB approximation isproposed. A comparison with other methods and the exact numerical results shows thatour method is much more accurate than the ordinary WKB method and other existingapproximate methods.
出处
《光学学报》
EI
CAS
CSCD
北大核心
1994年第11期1223-1226,共4页
Acta Optica Sinica
关键词
平板波导
色散方程
planar optical waveguide, dispersion equation.
