Based on the form‐invariance of Maxwell's equations under coordinate transformations,
mathematically smooth deformation of space can be physically equivalent to …

A double-layer lens consists of a first gradient-index/geodesic profile in an upper
waveguide, partially surrounded by a mirror that reflects the wave into a lower guide where …

Non-Euclidean transformations have been recently proposed to produce a link between 3-D
homogeneous surfaces and 2-D dielectric lenses. Therefore, the propagation in a …

The field of transformation optics shows that media containing gradients in optical properties
are equivalent to curved geometries of spacetime for the propagation of light. Conformal …

Here, we propose a low-profile polarizing technique integrated in a parallel plate waveguide
(PPW) configuration, compatible with fully metallic geodesic lens antennas. The geodesic …

A parallel‐plate waveguide half‐Luneburg geodesic lens is designed and experimentally
validated in the Ka‐band. The geodesic lens profile is modulated using spline functions to …

Transformation optics asks, using Maxwell's equations, what kind of electromagnetic
medium recreates some smooth deformation of space? The guiding principle is Einstein's …

The number of waveguides crossing an intersection increases with the development of
complex photonic integrated circuits. Numerical simulations are presented to demonstrate …

Spatial transforms are a popular technique for designing periodic structures that are
macroscopically inhomogeneous. The structures are often required to be anisotropic …

The extrinsic and intrinsic curvature of a two-dimensional waveguide influences wave
propagation therein. While this can already be apprehended from a geometric point of view …