1. INTRODUCTIONRectangular dielectric waveguides play the most fundamental and important role in developing waveguide-type optical devices. For designing these devices, it is strongly needed to analyze the waveguide accurately with moderate simplicty.The approximate methods proposed so far do not give the mode propagation constant with high accuracy which is suitable for the device designing. The errors originate from the pseudo waveguide structures which are actually analyzed in these methods. In this paper, we propose a simple and accnrate analyzing technique. Results obtained by the proposed method agree excellently with the cxact values obtained by the complicated numerical investigation.
展开▼
