Open AccessAdjustable phase resonances in a compound metallic grating with perpendicular cuts
Author(s) -
Xiang Zhai,
Jianqiang Liu,
Meng-Dong He,
Lingling Wang,
Shuangchun Wen,
Dianyuan Fan
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.006871
Subject(s) - optics , grating , perpendicular , phase (matter) , extraordinary optical transmission , transmission (telecommunications) , diffraction grating , slit , physics , materials science , surface plasmon , plasmon , surface plasmon polariton , geometry , telecommunications , mathematics , quantum mechanics , computer science
We propose a compound metallic grating with perpendicular cuts in each slit and investigate its optical transmission property theoretically. The odd and even waveguide modes exhibit different behaviors when the cuts are set asymmetrically in the slits. Particularly, it is shown that the transmission dips of transmission spectrum for this compound periodic structure can be realized alternately by shifting the position of cuts in the slit. The effect of cut size on the phase resonances in the proposed metallic grating is also identified, and the underlying physics is discussed by the simulated field and phase maps.