Abstract
In this Letter, properties of a pedestal-supported silicon waveguide are investigated, showing that it supports single polarization transmission. The pedestal is fabricated easily through a wet-etching process on strip waveguides. Theoretical analysis shows that this property is due to the leakage of quasi-TM mode when the pedestal width is small. A polarization extinction ratio larger than at is measured in the pedestal waveguide sample, demonstrating single polarization transmission property experimentally. Thanks to its large single polarization transmission bandwidth, robustness in fabrication tolerance, and simple fabrication process, pedestal waveguides will have potential applications as simple silicon-integrated polarizers.
© 2011 Optical Society of America
Full Article | PDF ArticleMore Like This
Liu Liu, Yunhong Ding, Kresten Yvind, and Jørn M. Hvam
Opt. Lett. 36(7) 1059-1061 (2011)
Haishan Sun, Antao Chen, Don Abeysinghe, Attila Szep, and Richard S. Kim
Opt. Lett. 37(1) 13-15 (2012)
Xiaoliu Zuo and Zhijun Sun
Opt. Lett. 36(15) 2946-2948 (2011)