Dynamic Control of Defective Gap Mode Through Defect Location

• 作 者: 苌磊 李应红 吴云 张辉洁 王卫民 宋慧敏
• 机 构: Science and Technology on Plasma Dynamics Laboratory, Air Force Engineering University,Department of
• 出 处: Plasma Science and Technology
• 发表日期: 2016年01期
• 关键词: periodicity conducting dynamically photonic confined modulated periodically defe

A one dimensional model is developed for defective gap mode(DGM)with two types of boundary conditions:conducting mesh and conducting sleeve.For a periodically modulated system without defect,the normalized width of spectral gaps equals to the modulation factor,which is consistent with previous studies.For a periodic system with local defects introduced by the boundary conditions,it shows that the conducting-mesh-induced DGM is always well confined by spectral gaps while the conducting-sleeve-induced DGM is not.The defect location can be a useful tool to dynamically control the frequency and spatial periodicity of DGM inside spectral gaps.This controllability can be potentially applied to the interaction between gap eigenmodes and energetic particles in fusion plasmas,and optical microcavities and waveguides in photonic crystals.

A one dimensional model is developed for defective gap mode (DGM) with two types of boundary conditions: conducting mesh and conducting sleeve. For a periodically modulated system without defect, the normalized width of spectral gaps equals to the modulation factor, which is consistent with previous studies. For a periodic system with local defects introduced by the boundary conditions, it shows that the conducting-mesh-induced DGM is always well confined by spectral gaps while the conducting-sleeve-induced DGM is not. the defect location can be a useful tool to dynamically control the frequency and spatial periodicity of DGM inside spectral gaps.This controllability can be potentially applied to the interaction between gap eigenmodes and energetic particles in fusion plasmas, and optical microcavities and waveguides in photonic crystals.