Novel designs for integrating YIG/air photonic crystal slab polarizers with waveguide faraday rotators
Novel designs for integrating YIG/air photonic crystal slab polarizers with waveguide faraday rotators
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DOI：
10.1109/lpt.2004.838156
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发表时间：
2005-01-01
影响因子：
2.6
通讯作者：
Stadler, BJH
中科院分区：
文献类型：
--
作者：
Mondal, SK;Stadler, BJH
基于新型磁光材料钇铁石榴石（YIG）的光子晶体平板波导（PCSW）已被设计用于实现完全集成的光隔离器。的PCSW具有基本的带隙甚至（横电（TE）样）模式的波长为1.33 μ m左右。采用分波分析和三维时域有限差分法对不同取向的类TE和类横磁（TM）极化的传播损耗进行了数值研究。所得到的PCSW设计可用于隔离类TE模式与类TM模式，反之亦然，隔离比分别为-60和-40 dB。这些设计的主要优点之一是它们为石榴石波导提供了无界面偏振器。该设计可以很容易地扩展到1.55妈妈进一步的多功能性。
Photonic crystal slab waveguides (PCSWs), based on the novel magnetooptic material, yttrium iron garnet (YIG), have been designed in order to enable fully integrated optical isolators. The PCSWs possess fundamental bandgaps for even (transverse-electric (TE)-like) modes around the wavelength of 1.33 mum. Propagation losses for both the TE-like and transverse-magnetic (TM)-like polarizations with various orientations have been investigated numerically using partial-wave analysis and a three-dimensional finite-difference time-domain method. The resulting PCSW designs can be used to isolate TE-like modes from TM-like modes and vice versa with isolation ratios of -60 and -40 dB, respectively. One of the main benefits of these designs is that they provide interface-free polarizers for the garnet waveguides. The designs can easily be extended to 1.55 mum for further versatility.