Dispersion Characteristics of Thin-Film Waveguides with Two Dimensionally Sinusoidal Surface Corrugation
Rigorous apde-rpakhing techniques are used to salve the boundary value problem with tw-dimensionally C2D) sinusoidal corrugation in addition to the ordinary flat interface. Dispersion characteristics of the whole structure are presented. New physical effects of 2D periodic structure can be seen and rrnderstoad fran nurperical results. IHIEoWcnON 20 periodical surf- corrugatim in a planar guiding structwe can cause many new attractive physical effects based an which my circuits and devices for aiaawave, milliaeter and infrared waves can be established. Theexperinental phenosreM of the light propagaticm in 2D periodic planar waveguide have bean studied and summized (11. Several plethodr have been used in analysis. (hedidonally corrugated gratings has been rigorously analyzed using coupled-Wve analysis t23. By dividing the surface corrugation inb a large number of thin Cplanu) layers then treating one layer at a ti=, the results are thewetically obtainable bo an arbitrary level of accuracy. ht tha practidly treatable number of layers and lcIhe Roject supported by NatioMf WenCe Foundation of