Guided Modes in a Two-Dimensional Photonic Crystal Waveguide
Consisting of Nearly-Free-Electron Metals
XIAO San-Shui1,3, HE Sai-Ling1,2, ZHUANG Fei1
1Centre for Optical and Electromagnetic Research, State Key Laboratory for Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027
2Department of Electromagnetic Theory, Royal Institute of Technology, S-100 44 Stockholm, Sweden
3Department of Physics, Zhejiang University, Hangzhou 310027
Guided Modes in a Two-Dimensional Photonic Crystal Waveguide
Consisting of Nearly-Free-Electron Metals
XIAO San-Shui1,3;HE Sai-Ling1,2;ZHUANG Fei1
1Centre for Optical and Electromagnetic Research, State Key Laboratory for Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027
2Department of Electromagnetic Theory, Royal Institute of Technology, S-100 44 Stockholm, Sweden
3Department of Physics, Zhejiang University, Hangzhou 310027
Abstract： Guided modes in a two-dimensional photonic crystal consisting of nearly-free-electron metals are considered. To avoid time-consuming convolution, modified time-stepping formulas are used in a finite-difference time-domain approach. The guided modes in the metallic photonic crystal waveguide are related to those in a conventional metallic waveguide. A cut-off frequency exists, and consequently a mode gap at low frequencies in the photonic crystal metallic waveguide.
2001, Vol. 18 
