Optical circulators in two-dimensional magneto-optical photonic crystals
Optical circulators in two-dimensional magneto-optical photonic crystals
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DOI：
10.1364/ol.30.001989
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发表时间：
2005-08-01
期刊：
影响因子：
3.6
通讯作者：
Fan, SH
中科院分区：
文献类型：
--
作者：
Wang, Z;Fan, SH
我们提出了一种在二维光子晶体中由磁光腔构成的光环行器。利用空间工程磁畴结构，可以设计出支持一对不同频率的反向旋转态的腔体。通过将腔体与三个波导耦合，并将腔体模式的频率分裂与腔体与波导之间的耦合强度适当匹配，可以创建理想的完全隔离和传输的三端口环行器。在给定磁光常数的情况下，我们提出了最大化模态耦合和工作带宽所需的畴设计准则。(c) 2005年美国光学学会。
We propose an optical circulator formed of a magneto-optical cavity in a 2D photonic crystal. With spatially engineered magnetic domain structures, the cavity can be designed to support a pair of counterrotating states at different frequencies. By coupling the cavity to three waveguides, and by proper matching of the frequency split of the cavity modes with the coupling strength between the cavity and the waveguide, ideal three-port circulators with complete isolation and transmission can be created. We present a guideline for domain design needed to maximize the modal coupling and the operational bandwidth for any given magneto-optical constant. (c) 2005 Optical Society of America.