Journal ArticleDOI
Transverse localization of light in 1D disordered waveguide lattices in the presence of a photonic bandgap
TLDR
In this article, the role of a prominent photonic bandgap (PBG) in the phenomenon of transverse localization of light in a semi-infinite lossless waveguide lattice consisting of evanescently coupled disordered one-dimensional optical waveguides has been investigated numerically.Abstract:
The role of a prominent photonic bandgap (PBG) in the phenomenon of transverse localization of light in a semi-infinite lossless waveguide lattice consisting of evanescently coupled disordered one-dimensional optical waveguides has been investigated numerically. The interplay between the underlying photonic bandgap due to inherent periodicity of the optical system and various levels of deliberately induced transverse disorder in its refractive index periodicity has been studied. We show that the PBG indeed plays an important role and that its simultaneous presence could catalyze realization of localized light even when the strength of disorder is not sufficiently strong to independently cause localization of light. An important outcome of this study revealed that the PBG could be gainfully exploited to tailor the spectral window for localization of light in potential applications such as lasing in a disordered optical lattice.read more
Citations
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Influence of InP Coupling Cavity on Fano Resonance of Sub Wavelength MIM Waveguide
TL;DR: In this article, the influence of InP coupling cavity on Fano resonance of sub-wavelength MIM waveguide was studied by FDTD, and it was observed that the resonant wavelengths of mode mj (j = 1, 2, 3) were closely related with the height H 2 of the coupling cavity.
Journal ArticleDOI
Resonance of Different Waveguide Structures with Various Vertical Indirect Coupled Cavities
TL;DR: In this article, the FDTD of different waveguide structures with various vertical indirect coupled cavities were investigated by FDTD (finite difference-time domain) and the resonance peak at about 850nm moved to the long wavelength (redshift).
References
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Journal ArticleDOI
Strong localization of photons in certain disordered dielectric superlattices
TL;DR: A new mechanism for strong Anderson localization of photons in carefully prepared disordered dielectric superlattices with an everywhere real positive dielectrics constant is described.
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Transport and Anderson localization in disordered two-dimensional photonic lattices
TL;DR: The experimental observation of Anderson localization in a perturbed periodic potential is reported: the transverse localization of light caused by random fluctuations on a two-dimensional photonic lattice, demonstrating how ballistic transport becomes diffusive in the presence of disorder, and that crossover to Anderson localization occurs at a higher level of disorder.
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Anderson localization and nonlinearity in one-dimensional disordered photonic lattices.
Yoav Lahini,Assaf Avidan,F. Pozzi,Marc Sorel,Roberto Morandotti,Demetrios N. Christodoulides,Yaron Silberberg +6 more
TL;DR: An intermediate regime is found in which the ballistic and localized components coexist while diffusive dynamics is absent and evidence is found for a faster transition into localization under nonlinear conditions.
Journal ArticleDOI
Speckle-free laser imaging using random laser illumination
TL;DR: Exploiting the low spatial coherence of specifically designed random lasers, researchers demonstrate speckle-free full-field imaging in the regime of intense optical scattering.
Journal ArticleDOI
Light propagation and localization in modulated photonic lattices and waveguides
TL;DR: In this article, the authors review both theoretical and experimental advances in the recently emerged field of modulated photonic lattices and highlight a new type of modulation-induced light localization based on the defect-free surface waves.