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.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
