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Title: Surface-wave pulse routing around sharp right angles
Authors: Gao, Zhen
Xu, Hongyi
Gao, Fei
Zhang, Yaxin
Luo, Yu
Zhang, Baile
Keywords: Surface Plasmon Polariton
Issue Date: 2018
Source: Gao, Z., Xu, H., Gao, F., Zhang, Y., Luo, Y., & Zhang, B. (2018). Surface-wave pulse routing around sharp right angles. Physical Review Applied, 9(4), 044019-.
Series/Report no.: Physical Review Applied
Abstract: Surface-plasmon polaritons (SPPs), or localized electromagnetic surface waves propagating on a metal-dielectric interface, are deemed promising information carriers for future subwavelength terahertz and optical photonic circuitry. However, surface waves fundamentally suffer from scattering loss when encountering sharp corners in routing and interconnection of photonic signals. Previous approaches enabling scattering-free surface-wave guidance around sharp corners are limited to either volumetric waveguide environments or extremely narrow bandwidth, being unable to guide a surface-wave pulse (SPP wave packet) on an on-chip platform. Here, in a surface-wave band-gap crystal implemented on a single metal surface, we demonstrate in time-domain routing a surface-wave pulse around multiple sharp right angles without perceptible scattering. Our work not only offers a solution to on-chip surface-wave pulse routing along an arbitrary path, but it also provides spatiotemporal information on the interplay between surface-wave pulses and sharp corners, both of which are desirable in developing high-performance large-scale integrated photonic circuits.
DOI: 10.1103/PhysRevApplied.9.044019
Rights: © 2018 American Physical Society. This paper was published in Physical Review Applied and is made available as an electronic reprint (preprint) with permission of American Physical Society. The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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