15 citations · 15 across the 2 of their papers we have counts for
6 papers
Circularly polarized states and propagating bound states in the continuum in a periodic array of cylinders
Amgad Abdrabou, Ya Yan Lu
Bound states in the continuum (BICs) in a periodic structure sandwiched between two homogeneous media have interesting properties and useful applications in photonics. The topologi…
Complex modes in an open lossless periodic waveguide
Amgad Abdrabou, Ya Yan Lu
Guided modes of an open periodic waveguide, with a periodicity in the main propagation direction, are Bloch modes confined around the waveguide core with no radiation loss in the t…
Exceptional points of Bloch eigenmodes on a dielectric slab with a periodic array of cylinders
Amgad Abdrabou, Ya Yan Lu
Eigenvalue problems for electromagnetic resonant states on open dielectric structures are non-Hermitian and may have exceptional points (EPs) at which two or more eigenfrequencies…
Exceptional points for resonant states on parallel circular dielectric cylinders
Amgad Abdrabou, Ya Yan Lu
Exceptional points (EPs) are special parameter values of a non-Hermitian eigenvalue problem where eigenfunctions corresponding to a multiple eigenvalue coalesce. In optics, EPs are…
Indirect link between resonant and guided modes on uniform and periodic slabs
Amgad Abdrabou, Ya Yan Lu
A uniform or periodic dielectric slab can serve as an optical waveguide for which guided modes are important, and it can also be used as a diffraction structure for which resonant…
Exceptional Points of Resonant States on a Periodic Slab
Amgad Abdrabou, Ya Yan Lu
A special kind of degeneracies known as the exceptional points (EPs), for resonant states on a dielectric periodic slab, are investigated. Due to their unique properties, EPs have…