Journal
OPTICS LETTERS
Volume 40, Issue 16, Pages 3922-3925Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.40.003922
Keywords
-
Categories
Funding
- Fonds De La Recherche Scientifique - FNRS (Belgian National Fund for Scientific Research)
- Belgian Science Policy Office [P7-35]
Ask authors/readers for more resources
Typical parity-time (PT) symmetric structures switch from the unbroken to the broken phase when gain increases through an exceptional point. In contrast, we report on systems with the unusual, reverse behavior, where the symmetric phase is recovered after a broken phase. We study this phenomenon analytically and numerically in the simplest possible system, consisting of four coupled modes, and we present potential dielectric and plasmonic implementations. The complex mode merging scheme, with two distinct unbroken PT phases encompassing a broken one, appears for a specific proportion range of the coupling constants. This regime with inverse exceptional points is interesting for the design of novel PT devices. (C) 2015 Optical Society of America
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available