Abstract

We consider the interaction of a short optical pulse with a layer with periodically modulated permittivity and a periodic gain-and-loss landscape. It is found that if the medium is quasi-parity-time (PT)-symmetric in the vicinity of the exceptional point, the propagation manifests strong unidirectional reflection and invisibility. Due to strong frequency selectivity, quasi-PT-symmetric periodic layers manifest efficient filtering of back-radiation.

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 call

Disclaimer: 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.