Dispersion-based optical routing in photonic crystals

Abstract

We present and experimentally validate self-collimation in planar photonic crystals as a new means of achieving structureless confinement of light in optical devices. We demonstrate the ability to arbitrarily route light by exploiting the dispersive characteristics of the photonic crystal. Propagation loss as low as 2.17 dB/mm is observed, and proposed applications of these devices are presented.

Photonic integration in k-space: Enhancing the performance of photonic crystal dye lasers

“…It could, e.g., be applied to low and high index PhCs for sensing and optofluidics [14][15][16][17] as well as other types of adaptive optics, 18 for slow light engineering, 19 collimation, and hyperlensing [20][21][22][23] or for highly confined optical cavities. 24 The method could be extended to provide entirely new multifunctional materials, as metamaterials hold promise for.…”

Self-collimation in PT -symmetric crystals

“…In addition, self-collimation has also been demonstrated in acoustics [6,7], and exciton-polariton condensates [8], though the study of the phenomenon is more advanced in the field of optics. The propagation of nondiffractive beams was initially observed in photonic crystals (PhCs), i.e., structured materials presenting a spatial modulation of the refraction index on the wavelength scale [9][10][11][12][13][14][15]. Later, similar beam propagation effects were proposed in gain-loss modulated materials (GLMMs) [16,17].…”

Dispersion-guided resonances in two-dimensional photonic-crystal-embedded microcavities

“…Recently, a host of PC dispersion-based waveguiding phenomenaself-collimation [5], superprism effect [6], and negative refraction [7], have also gained increasing attention. Dispersion-based PC components utilizing high-index contrast square lattice of submicrometer air holes have been experimentally demonstrated on silicon-oninsulator (SOI) substrates [8,9]. Numerical simulations also suggest that lightwave can be dispersion-guided within the PC first band near the square lattice ΓM direction [10].…”