Signature of phase singularities in diffusive regime in one dimensional disordered lattices: Interplay and qualitative analysis

Abstract

Co-existence and interplay between mesoscopic light dynamics with singular optics in spatially random but temporally coherent disordered waveguide lattices is reported. Two CW light beams of 1.55 micron operating wavelength are launched as inputs to 1D waveguide lattices with controllable weak disorder in refractive index profile. Direct observation of phase singularities in the speckle pattern along the length is numerically demonstrated. Quantitative analysis of onset of such singular behavior and diffusive wave propagation is analyzed for the first time.

4 pages 4 figures

References in corpus (4)

• Robust light transport in non-Hermitian photonic lattices
• Impact of loss on the wave dynamics in photonic waveguide lattices
• Spatial Distribution of Phase Singularities in Optical Random Vector Waves
• Veiled symmetry of disordered Parity-Time lattices: protected PT-threshold and the fate of localization