A comprehensive review considering recent advances in self‐collimation and its
applications in optical integration is covered in the current article. Self‐collimation is …

In quantum theory, any Hamiltonian describing a physical system is mathematically
represented by a self-adjoint linear operator to ensure the reality of the associated …

We investigate a class of optical mesh periodic structures that are discretized in both the
transverse and longitudinal directions. These networks are composed of waveguide arrays …

Photonic crystals are well known for their celebrated photonic band-gaps—the forbidden
frequency ranges, for which the light waves cannot propagate through the structure. The …

Exact solutions for the generalized nonlinear Schrödinger equation with inhomogeneous
complex linear and nonlinear potentials are found. We have found localized and periodic …

Vortices, shocks, domains of tilted waves, and cross-roll patterns are typical patterns of the
complex Swift-Hohenberg equation, which describes spatiotemporal dynamics in nonlinear …

We propose a simple realistic two-dimensional complex parity-time-symmetric photonic
structure that is described by a non-Hermitian potential but possesses real-valued …

We propose and analyze a beam-sha** mechanism that in broad-area semiconductor
amplifiers occurs due to spatial pump modulation on a micrometer scale. The study …

We introduce a class of systems holding parity-time (PT) symmetry locally, whereas being
globally P symmetric. The potential, U= U (| r|), fulfills PT symmetry with respect to …

The Goos-Hänchen (GH) effect for wave scattering from complex PT-symmetric periodic
potentials (complex crystals) is theoretically investigated, with specific reference to optical …