Resonance splitting in gyrotropic ring resonators.
Resonance splitting in gyrotropic ring resonators.
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DOI：
10.1364/ol.35.003438
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发表时间：
2010-10
期刊：
影响因子：
3.6
通讯作者：
D. Jalas;A. Petrov;M. Krause;J. Hampe;M. Eich
中科院分区：
文献类型：
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作者：
D. Jalas;A. Petrov;M. Krause;J. Hampe;M. Eich
我们提出了基于覆盖有磁光聚合物包层的硅环谐振器中的谐振分裂的光隔离器的理论概念。对于此任务，针对柱坐标系中的模态导出了一种扰动方法。假设聚合物磁光包层导致介电张量的非对角线元素的振幅为 0.01。结果表明，对于较小的环半径，顺时针和逆时针模式的衍生共振分裂会增加。对于半径约为 1.5μm 的环，演示了 29GHz 分裂。提出了一种基于临界耦合环形谐振器的几何尺寸为 10μm 的集成光学隔离器。
We present the theoretical concept of an optical isolator based on resonance splitting in a silicon ring resonator covered with a magneto-optical polymer cladding. For this task, a perturbation method is derived for the modes in the cylindrical coordinate system. A polymer magneto-optical cladding causing a 0.01 amplitude of the off-diagonal element of the dielectric tensor is assumed. It is shown that the derived resonance splitting of the clockwise and counterclockwise modes increases for smaller ring radii. For the ring with a radius of approximately 1.5μm, a 29GHz splitting is demonstrated. An integrated optical isolator with a 10μm geometrical footprint is proposed based on a critically coupled ring resonator.