1. 光電及電磁的週期結構與共振結構之設計與應用: 光子晶體、頻率選擇面、電磁能隙、相位陣列元件、及各種超穎物質
2. 積體光學及光通訊的波導元件之設計與應用
1. Design and applications of electromagnetic periodic and resonant structures, including photonic crystals (PhC), frequency-selective surfaces (FSS), electromagnetic bandgaps (EBG), phased-array elements, and various metamaterials.
2. Design and applications of waveguide devices for integrated optics and optical communications.