Abstract

We investigate and simulate the light transmitting and coupling characteristics of surface mode waveguides (SMWs) based on photonic crystals (PhCs) with a triangular lattice of air holes. We demonstrate that surface waves can be efficiently propagated and served as a new kind of high-efficiency single-SMW-based filter with broad bandwidth in the outer space of PhCs. We also explore the highly efficient coupling of hetero-SMWs constructed by cascading different truncated surfaces. The coupling efficiency is insensitive to the interface position.

©2012 Optical Society of America

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