Abstract
A novel design of optical filters, based on the vertical coupling between channel waveguides and photonic crystal microcavities, is proposed. The choice of channel waveguides can be arbitrary because of the flexibility of the device geometry, which makes it possible to utilize conventional low-loss waveguides. The separation between waveguides and microcavities, which determines filter bandwidths and drop efficiencies, can be accurately controlled by material growth (or deposition). The filters might also be switchable, e.g., by mechanical movements of microcavities. An example of a reflection-type optical filter is demonstrated in numerical experiments using the finite-difference time-domain method.
© 2005 Optical Society of America
Full Article | PDF ArticleMore Like This
Kapil Debnath, Karl Welna, Marcello Ferrera, Kieran Deasy, David G. Lidzey, and Liam O’Faolain
Opt. Lett. 38(2) 154-156 (2013)
Zhenfeng Xu, Jiangang Wang, Qingsheng He, Liangcai Cao, Ping Su, and Guofan Jin
Opt. Express 13(15) 5608-5613 (2005)
L. Ferrier, P. Rojo Romeo, X. Letartre, E. Drouard, and P. Viktorovitch
Opt. Express 18(15) 16162-16174 (2010)