A new terahertz isolator based on the ferromagnetic resonance effect is suggested and analyzed. A two-dimensional photonic crystal consisting of a square lattice of gallium arsenide rods has been employed in the design of the device. Incident electromagnetic waves interact with one magnetized ferrite rod and two stubs inserted in the photonic crystal structure, generating a vortex-like field profile in the ferrite rod. Electromagnetic signals propagating in the forward direction are transmitted with low insertion losses, while their propagation in the backward direction is not allowed due to the high losses of the ferrite rod operating at the ferromagnetic resonance regime. Computational simulations show that the operating bandwidth is equal to 0.87 GHz around the central frequency 106.6 GHz. In this frequency band, the insertion losses are lower than − 1.68 dB, the reflection levels are better than − 16 dB, and the isolation levels are greater than − 15 dB.

中文翻译：

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基于具有太赫兹涡旋的光子晶体结构的铁磁共振隔离器

提出并分析了一种基于铁磁共振效应的新型太赫兹隔离器。由砷化镓棒的方格子组成的二维光子晶体已用于该装置的设计中。入射电磁波与一根磁化的铁氧体棒和插入光子晶体结构中的两个短线相互作用，从而在铁氧体棒中产生涡旋状的磁场轮廓。沿正向传播的电磁信号以低插入损耗传输，而由于在铁磁谐振状态下工作的铁氧体棒的高损耗，不允许沿反向传播。计算仿真表明，工作带宽在中心频率106.6 GHz附近等于0.87 GHz。在这个频段