Spatial algebraic solitons at the Dirac point in optically induced nonlinear photonic lattices


The discovery of a new type of soliton occurring in periodic systems is reported. This type of nonlinear excitation exists at a Dirac point of a photonic band structure, and features an oscillating tail that damps algebraically. Solitons in periodic systems are localized states traditionally supported by photonic bandgaps. Here, it is found that besides photonic bandgaps, a Dirac point in the band structure of triangular optical lattices can also sustain solitons. Apart from their theoretical impact within the soliton theory, they have many potential uses because such solitons are possible in both Kerr material and photorefractive crystals that possess self-focusing and self-defocusing nonlinearities. The findings enrich the soliton family and provide information for studies of nonlinear waves in many branches of physics.

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Divisions: Engineering & Applied Sciences
Engineering & Applied Sciences > Aston Institute of Photonics Technology
Engineering & Applied Sciences > Electrical, Electronic & Power Engineering
Additional Information: © 2017 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. An OSA-formatted open access journal article PDF may be governed by the OSA Open Access Publishing Agreement signed by the author and any applicable copyright laws. Authors and readers may use, reuse, and build upon the article, or use it for text or data mining without asking prior permission from the publisher or the Author(s), as long as the purpose is non-commercial and appropriate attribution is maintained. Funding: National Natural Science Foundation of China (11574070, 11404087, 51771186); Fundamental Research Funds for the Central Universities of China; Postdoctoral Science Foundation (2015M571918, 2017T100442); The European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement (744817).
Uncontrolled Keywords: Spatial solitons,Subwavelength structures,nanostructures,Atomic and Molecular Physics, and Optics
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
https://www.osa ... =oe-25-24-30349 (Publisher URL)
PURE Output Type: Article
Published Date: 2017-11-20
Accepted Date: 2017-11-11
Submitted Date: 2017-08-28
Authors: Xie, Kang
Boardman, Allan D.
Li, Qian
Shi, Zhiwei
Jiang, Haiming
Xia, Hongyan
Hu, Zhijia ( 0000-0002-8960-5318)
Zhang, Junxi
Zhang, Wei ( 0000-0002-3584-8541)
Mao, Qiuping
Hu, Lei
Yang, Tianyu
Wen, Fei
Wang, Erlei



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