Adjustable phase resonances in a compound metallic grating with perpendicular cuts.
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.
Zhai
Xiang
X
Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education, School of Computer and Communication, Hunan University, Changsha 410082, China.
Liu
Jian-Qiang
JQ
He
Meng-Dong
MD
Wang
Ling-Ling
LL
Wen
Shuangchun
S
Fan
Dianyuan
D
D000465:Algorithms; D004560:Electricity; D004574:Electromagnetic Fields; D004867:Equipment Design; D008422:Materials Testing; D008670:Metals / Q000737:chemistry*; D008962:Models, Theoretical; D055095:Optics and Photonics; D010825:Physics / Q000379:methods; D012031:Refractometry / Q000295:instrumentation / Q000379:methods*; D020349:Surface Plasmon Resonance; D013499:Surface Properties
D008670:Metals