Title :
Enhanced optical transmission through a metallic slit covered with a nanostrip and surrounded by corrugations
Author :
Li, Guangyuan ; Lu, Fan ; Meng, Zhen ; Xu, Anshi
Author_Institution :
State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Peking Univ., Beijing, China
Abstract :
We theoretically investigate the optical transmission through a subwavelength slit covered with a nanostrip and surrounded by corrugations in a metal film. Simulations results show that with a nanostrip on top of the slit, the optical transmission efficiency through the slit surrounded by grooves is greatly enhanced for various angles of incidence compared with the structure without the nanostrip. The nanostrip should be thick enough to result in an air nanocavity with high Q value and enhanced transmission efficiency.
Keywords :
infrared spectra; light transmission; metallic thin films; nanophotonics; visible spectra; Q value; air nanocavity; corrugations; enhanced optical transmission; incidence angles; metal film; metallic slit; nanostrip; Abstracts; Gold; Integrated circuits; Silicon; Enhanced optical transmission; nanostrip; surface plasmon polaritions;
Conference_Titel :
Communications and Photonics Conference and Exhibition, 2011. ACP. Asia
Conference_Location :
Shanghai
Print_ISBN :
978-0-8194-8961-6
