Transverse Anderson localization of light near Dirac points of photonic nanostructures

Hanying Deng, Xianfeng Chen, Boris A. Malomed, Nicolae C. Panoiu, Fangwei Ye*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We perform a comparative study of the Anderson localization of light beams in disordered layered photonic nanostructures that, in the limit of periodic layer distribution, possess either a Dirac point or a Bragg gap in the spectrum of the wavevectors. In particular, we demonstrate that the localization length of the Anderson modes increases when the width of the Bragg gap decreases, such that in the vanishingly small bandgap limit, namely when a Dirac point is formed, even extremely high levels of disorder are unable to localize the optical modes residing near the Dirac point. A comparative analysis of the key features of the propagation of Anderson modes formed in the Bragg gap or near the Dirac point is also presented. Our findings could provide valuable guidelines in assessing the influence of structural disorder on the functionality of a broad array of optical nanodevices.

Original languageEnglish
Article number15585
JournalScientific Reports
StatePublished - 26 Oct 2015


FundersFunder number
European Research Council/ERC
Horizon 2020 Framework Programme648328
National Natural Science Foundation of China11104181, 61475101
Shanghai Municipal Education Commission13ZZ022


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