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A Fundamental Limit on Propagation Loss of Waveguides with Subwavelength Mode Size
Amir Arbabi, Ehsan Arbabi, Safieddin Safavi-Naeini
A fundamental trade-off relation between the cross sectional confinement and propagation length of an arbitrary mode of a general waveguide is presented. This limit is a generaliza…
Fundamental Limits of Ultrathin Metasurfaces
Amir Arbabi, Andrei Faraon
We present universal theoretical limits on the operation and performance of non-magnetic passive ultrathin metasurfaces. In particular, we prove that their local transmission, refl…
Dielectric Metasurfaces for Complete Control of Phase and Polarization with Subwavelength Spatial Resolution and High Transmission
Amir Arbabi, Yu Horie, Mahmood Bagheri +1
Metasurfaces are planar structures that locally modify the polarization, phase, and amplitude of light in reflection or transmission, thus enabling lithographically patterned flat…
Subwavelength-thick Lenses with High Numerical Apertures and Large Efficiency Based on High Contrast Transmitarrays
Amir Arbabi, Yu Horie, Alexander J. Ball +2
We report subwavelength-thick, polarization insensitive micro-lenses operating at telecom wavelength with focal spots as small as 0.57 wavelengths and measured focusing efficiency…