Optical flat bands in 2D waveguide arrays with alternating sign of refraction index

19th International Youth School on Coherent Optics and Optical Spectroscopy

Maimistov, A.I.^1,2 ; Gabitov, I.R.^3,4

Department of Solid State Physics and Nanostructures, National Research Nuclear University MEPhI, Moscow

115409, Russia^1

Department of Physics and Technology of Nanostructures, Moscow Institute for Physics and Technology, Dolgoprudny, Moscow region

141700, Russia^2

Department of Mathematics, University of Arizona, Tucson

AZ

85721, United States^3

Skolkovo Institute of Science and Technology, Skolkovo Innovation Center, Moscow

143026, Russia^4

关键词: Flat band;    Forward-and-backward;    Negative refractions;    Optical flat;    Refraction index;    Two-dimensional arrays;    Waveguide array;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/714/1/012013/pdf
DOI  :  10.1088/1742-6596/714/1/012013

来源: IOP

【 摘 要 】

We consider the coupled forward and backward waves propagating in two dimensional array of waveguide, which are featured by a positive and negative refraction indexes. The existence of the flat band under certain conditions is demonstrated.