Optical sensing devices has a great potential in both industrial and biomedical applications
for the detection of biochemicals, toxic substances or hazardous gases thanks to their …

In this study, we present the design of a photonic crystal (PC) structure with a hexagonal
lattice, where adjustments to the PC unit cell symmetry reveal an all-angle self-collimation …

We report the coexistence of photonic and phononic beam guides in defect-free phoxonic
crystals that simultaneously allow a virtually diffractionless propagation for electromagnetic …

We report the all-angle dual optical and acoustic waveguides in defect-free phoxonic
crystals. The realization of this function relies on dual flat open equal-frequency contours …

We present a detailed analysis of a coupler based on the Luneburg lens to couple a silica
waveguide to a photonic crystal (PhC) waveguide. The dependence of coupling efficiency …

The concept of multifunctional reflection-mode gratings that are based on rod-type photonic
crystals (PhCs) with C 2 symmetry is introduced. The specific modal properties lead to the …

Asymmetric beaming in a piecewise-linear propagation channel is demonstrated for a single
photonic-crystal prism at Gaussian-beam illumination. The used hybrid refraction–diffraction …

Wide-angle, broadband self-collimation (SC) is demonstrated in a hexagonal photonic
crystal (PhC) fabricated in a low-refractive-index photopolymer by multiphoton lithography …

With the proposal of the concept of parity-time-symmetry, more and more exotic properties
are being unearthed in non-Hermitian systems. In this work, we investigate the related …

Self-collimation (SC) and mesoscopic self-collimation (MSC) have been successfully
demonstrated along the directions of high symmetry of photonic crystals. Indeed, wide …