Abstract
Photonic band structures of annular photonic-crystal (APC) silicon-on-insulator (SOI) asymmetric slabs with finite thickness were investigated by the three-dimensional plane-wave expansion method. The results show that for a broad range of air-volume filling factors, APC slabs can exhibit a significantly larger bandgap than conventional circular-hole photonic-crystal (PC) slabs. Bandgap enhancements over conventional air hole PC SOI slabs as large as twofold are predicted for low air-volume filling factors below 15%. This desirable behavior suggests a potential for APC SOI slabs to serve as the basis of various optical cavities, waveguides, and mirrors.
© 2011 Optical Society of America
Full Article | PDF ArticleMore Like This
H. Kurt, R. Hao, Y. Chen, J. Feng, J. Blair, D. P. Gaillot, C. Summers, D. S. Citrin, and Z. Zhou
Opt. Lett. 33(14) 1614-1616 (2008)
Zheng Han, Xavier Checoury, Laurent-Daniel Haret, and Philippe Boucaud
Opt. Lett. 36(10) 1749-1751 (2011)
Peng Shi, Kun Huang, Xue-liang Kang, and Yong-ping Li
Opt. Express 18(5) 5221-5228 (2010)