Nonreciprocal transmission of electromagnetic waves by three-layer magneto-optical mediums

• 来源期刊: 中国物理B（英文版）
• 关键词: magneto–optical medium nonreciprocal transmission nonreciprocity
• 年，卷（期）: 2019,（2）
• 页码范围: 193-197
• 页数: 5页
• 语种: 英文
• DOI: 10.1088/1674-1056/28/2/024101

摘要

We investigate the non-reciprocal transmission properties of a three-layer structure filled with magneto–optical medium and normal medium. Based on the transfer matrix method, we deduce the total transmission coefficient for a one-dimensional (1D) structure with anisotropic mediums. When two-side layers with magneto–optical medium loaded in opposite external magnetic field, the time-reversal symmetry of transmission properties will be broken. Our numerical results show that the non-reciprocal transmission properties are influenced by external magnetic fields, incident angle, and thickness of the normal medium layer. Since the non-reciprocal properties can be easily realized and adjusted by the simple structure, such a design has potential applications in integrated circulators and isolators.