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Metawaveguide for Asymmetric Interferometric Light-Light Switching

Zhao, Han and Fegadolli, William S. and Yu, Jiakai and Zhang, Zhifeng and Ge, Li and Scherer, Axel and Feng, Liang (2016) Metawaveguide for Asymmetric Interferometric Light-Light Switching. Physical Review Letters, 117 (19). Art. No. 193901. ISSN 0031-9007.

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Light-light switching typically requires strong nonlinearity where intense laser fields route and direct data flows of weak power, leading to a high power consumption that limits its practical use. Here we report an experimental demonstration of a metawaveguide that operates exactly in the opposite way in a linear regime, where an intense laser field is interferometrically manipulated on demand by a weak control beam with a modulation extinction ratio up to approximately 60 dB. This asymmetric control results from operating near an exceptional point of the scattering matrix, which gives rise to intrinsic asymmetric reflections of the metawaveguide through delicate interplay between index and absorption. The designed metawaveguide promises low-power interferometric light-light switching for the next generation of optical devices and networks.

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Additional Information:© 2016 American Physical Society. (Received 4 May 2016; published 31 October 2016) The work is supported by the U.S. Army Research Office (Grant No. W911NF-15-1-0152) and National Science Foundation (Grant No. DMR-1506884). L. G. acknowledges the support by National Science Foundation (Grant No. DMR-1506987). W. S. F. and A. S. acknowledge Boeing for their support under their SRDMA program and also thank the NSF CIAN Engineering Research Center (ERC) (Grant No. EEC-0812072). H. Z., W. S. F., and J. Y. contributed equally to this work.
Group:Kavli Nanoscience Institute
Funding AgencyGrant Number
Army Research Office (ARO)W911NF-15-1-0152
Boeing Company Strategic Research and Development RelationshipUNSPECIFIED
Issue or Number:19
Record Number:CaltechAUTHORS:20161031-121724478
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Official Citation:Metawaveguide for Asymmetric Interferometric Light-Light Switching Han Zhao, William S. Fegadolli, Jiakai Yu, Zhifeng Zhang, Li Ge, Axel Scherer, and Liang Feng Phys. Rev. Lett. 117, 193901
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:71626
Deposited By: George Porter
Deposited On:31 Oct 2016 21:28
Last Modified:03 Oct 2019 16:09

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