Scheuer J, Shtaif M
Department of Electrical Engineering, Tel Aviv University, Tel Aviv, Israel.
Opt Express. 2010 Jan 18;18(2):1762-76. doi: 10.1364/OE.18.001762.
We study the dispersion relations in slow-light waveguide structures consisting of coupled microdisk resonators. A group theoretical analysis of the symmetry properties of the propagating modes reveals a fundamental phenomenon: The degeneracy of the CW and CCW rotating modes is removed, giving rise to two distinct transmission bands. This effect induces symmetry-based dispersion which may limit the usable bandwidth of such structures. The properties of this band splitting and its impact on CROW performance for optical communications are studied in detail.
我们研究了由耦合微盘谐振器组成的慢光 waveguide 结构中的色散关系。对传播模式的对称性进行的群论分析揭示了一个基本现象：顺时针（CW）和逆时针（CCW）旋转模式的简并性被消除，产生了两个不同的传输带。这种效应会引发基于对称性的色散，这可能会限制此类结构的可用带宽。我们详细研究了这种带分裂的特性及其对用于光通信的耦合谐振光波导（CROW）性能的影响。
