Propagation of Electromagnetic Waves in Slab Waveguide Structure Consisting of Chiral Nihility Claddings and Negative-Index Material Core Layer

• 来源期刊: 光子传感器（英文版）
• 关键词: Slab waveguides chiral materials left-handed materials
• 年，卷（期）: 2018,（2）
• 页码范围: 176-187
• 页数: 12页
• 语种: 英文
• DOI: 10.1007/s13320-018-0414-z

摘要

The dispersion equation of an asymmetric three-layer slab waveguide,in which all layers are chiral materials is presented.Then,the dispersion equation of a symmetric slab waveguide,in which the claddings are chiral materials and the core layer is negative index material,is derived.Normalized cut-off frequencies,field profile,and energies flow of right-handed and left-handed circularly polarized modes are derived and plotted.We consider both odd and even guided modes.Numerical results of guided low-order modes are provided.Some novel feattures,such as abnormal dispersion curves,are found.