Presentation + Paper
28 August 2017 Non-PT-symmetric plasmonic waveguide-cavity systems: unidirectional reflectionlessness and broadband near total light absorption
G. Veronis, Y. Huang, C. Min
Author Affiliations +
Abstract
We introduce non-parity-time-symmetric plasmonic waveguide-cavity systems, consisting of resonators with unbalanced gain and loss side-coupled to a waveguide. We show that the design parameters of such systems can be tuned to obtain exceptional points, and realize unidirectional reflectionless light propagation. We then propose a compact perfect absorber unit cell, based on unidirectional reflectionlessness at exceptional points. We show that with proper design, light can propagate into the perfect absorber unit cell with reflection close to zero in a broad wavelength range. By cascading multiple unit cell structures, near total light absorption can be achieved in a wide range of frequencies.
Conference Presentation
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
G. Veronis, Y. Huang, and C. Min "Non-PT-symmetric plasmonic waveguide-cavity systems: unidirectional reflectionlessness and broadband near total light absorption", Proc. SPIE 10345, Active Photonic Platforms IX, 103451Z (28 August 2017); https://doi.org/10.1117/12.2274698
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KEYWORDS
Absorption

Plasmonics

Light wave propagation

Waveguides

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