Fu Jiapeng, Tandaechanurat Aniwat, Iwamoto Satoshi, Arakawa Yasuhiko
Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan.
Opt Express. 2013 May 20;21(10):12443-50. doi: 10.1364/OE.21.012443.
We report on the design of silicon three-dimensional (3D) photonic crystal (PC) waveguides with a combination of acceptor-type and donor-type line defects. Tuning the width of the acceptor-type line defect allows the waveguide to support two guided modes, which enable single-mode propagation over 98.7% of the complete photonic bandgap (cPBG). In addition, we demonstrate that the frequency ranges for single-mode propagation can be extended to the entire range of the cPBG by further tuning the thickness of the layers in which the donor-type line defects are located. The wide ranges of available frequencies for single mode propagation enable flexible design of 3D PC components and will provide a route towards future 3D photonic circuits.
我们报道了一种具有受主型和施主型线缺陷组合的硅三维（3D）光子晶体（PC）波导的设计。调整受主型线缺陷的宽度可使波导支持两种导模，从而在整个光子带隙（cPBG）的98.7%以上实现单模传播。此外，我们证明，通过进一步调整施主型线缺陷所在层的厚度，单模传播的频率范围可以扩展到cPBG的整个范围。单模传播的可用频率范围很宽，这使得3D PC组件的设计更加灵活，并将为未来的3D光子电路提供一条途径。
