10 citations · 11 across the 2 of their papers we have counts for
4 papers
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers
Yertay Zhiyenbayev, Yannis Kominis, Constantinos Valagiannopoulos +2
A generic photonic coupler with active and lossy parts, gain saturation and asymmetric characteristics is examined. Saturable activity is shown to be able to enhance the overall st…
Metasurface-Enabled Interference Suppression at Visible-Light Communications
Constantinos Valagiannopoulos, Theodoros A. Tsiftsis, Vassilios Kovanis
Light can be used for wireless information transmission apart from illumination; that is the key idea behind visible-light communication (VLC), one of the disruptive technologies o…
Judiciously distributing laser emitters to shape the desired far field patterns
Constantinos A. Valagiannopoulos, Vassilios Kovanis
The far-field pattern of a simple one-dimensional laser array of emitters radiating into free space is considered. In the path of investigating the inverse problem for their near f…
On the Minimal Scattering Response of PEC Cylinders in a Dielectric Cloak
Constantinos A. Valagiannopoulos, Pekka Alitalo, Sergei A. Tretyakov
Recently, it was shown that an infinite perfectly conducting (PEC) cylinder can be nearly perfectly cloaked from normally incident electromagnetic waves using a single-layer homoge…