Abstract
We numerically study the characteristics of optical transmission of metallic nanoslit arrays (MNSAs) with embedded microcavities (MC-MNSAs) and demonstrate that passbands of the transmission spectra can be monotonously tuned by adjusting the dimensions of the microcavities. The study discloses that spectra of conventional MNSAs and MC-MNSAs are determined mainly by cavity resonances of the slits or embedded microcavities, modified by in-plane surface-plasmon wave resonances. It is also found that coupling of cavity resonances between neighboring slits or microcavities has considerable effects on the passbands. The MC-MNSA structure is shown to have potentials in applications of tunable filter arrays.
© 2009 Optical Society of America
Full Article | PDF ArticleMore Like This
Yun Suk Jung, Jeff Wuenschell, Hong Koo Kim, Palwinder Kaur, and David H. Waldeck
Opt. Express 17(18) 16081-16091 (2009)
Yanxia Cui, Jun Hu, and Sailing He
J. Opt. Soc. Am. B 26(11) 2131-2135 (2009)
Hui Liu and Zhijun Sun
Opt. Express 29(9) 13590-13599 (2021)