Disorder-induced localization of light near edges of nonlinear photonic lattices |
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| Authors: | Dragana Jovi? Milivoj R Beli? Yuri S Kivshar Cornelia Denz |
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| Institution: | 1. Institute of Physics, University of Belgrade, P.O. Box 68, 11080 Belgrade, Serbia;2. Texas A & M University at Qatar, P.O. Box 23874 Doha, Qatar;3. Nonlinear Physics Center, Research School of Physics and Engineering, Australian National University, Canberra ACT 0200, Australia;4. Institut für Angewandte Physik and Center for Nonlinear Science (CeNoS), Westfälische Wilhelms-Universitt Münster, 48149 Münster, Germany;1. College of Physics and Electronics, Shandong Normal University, Jinan 250014, China;2. College of Physics and Electronic Engineering, Taishan University, Tai''an, Shandong 271021, China;1. Department of ECE, CVR College of Engineering, Hyderabad, India;2. Department of EEE, ILAHIA College of Engineering and Technology, Mulavoor, India;3. Electronics and Electrical Communications Engineering Department, Faculty of Electronic Engineering, Menouf 32951, Menoufia University, Egypt;4. Computational Optics Research Group, Advanced Institute of Materials Science, Ton DucThang University, Ho Chi Minh City, Viet Nam;5. Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Viet Nam |
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| Abstract: | We investigated the influence of edges and corners on the Anderson localization of light in disordered two-dimensional photonic lattices that are optically induced in nonlinear saturable photorefractive media. A systematic quantitative study of gradual transition from corner to bulk Anderson localization in truncated two-dimensional photonic lattices was carried out. We analyzed numerically the localization at several corners and edges of the square and triangular photonic lattices and compared them with the localization in bulk medium. We found that, for strong disorder, corners and edges effectively suppress Anderson localization, as compared to the bulk, but to a varying degree. |
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