Beam-Scanning Planar Lens Based on MetalaDielectricaMetal Waveguide Arrays
Under specific illumination conditions, periodic arrays of metaladielectricametal (MDM) waveguides act as uniform optical phased-array antenna where the phase of the radiating optical wave can be controlled by modifying the refractive index distribution of the dielectric material. Based on this prop...
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Published in | Plasmonics (Norwell, Mass.) Vol. 8; no. 2; pp. 481 - 486 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
01.06.2013
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Subjects | |
Online Access | Get full text |
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Summary: | Under specific illumination conditions, periodic arrays of metaladielectricametal (MDM) waveguides act as uniform optical phased-array antenna where the phase of the radiating optical wave can be controlled by modifying the refractive index distribution of the dielectric material. Based on this property, we propose a planar gradient index MDM-based lens which can transform spherical waves of the transverse-magnetic surface plasmon polariton waves to plane waves with specific beam deflections by adjusting the refractive index configurations. Using numerical simulations based on two-dimensional finite-difference time-domain method, it is confirmed that beam focusing and splitting with multiple dflection angles can also be achieved. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 content type line 23 ObjectType-Feature-1 |
ISSN: | 1557-1955 1557-1963 |
DOI: | 10.1007/s11468-012-9414-9 |