Journal
OPTICS EXPRESS
Volume 18, Issue 7, Pages 6871-6876Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.18.006871
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Funding
- National Natural Science Foundation of China [60890202, 10974049]
- Jiangxi Education Departments of China [GJJ10263]
- Natural Science Foundation of Hunan Province, China [07JJ3114]
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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. (C) 2010 Optical Society of America
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