TY - JOUR
T1 - Emulating exceptional-point encirclements using imperfect (leaky) photonic components
T2 - Asymmetric mode-switching and omni-polarizer action
AU - Khurgin, J. B.
AU - Sebbag, Y.
AU - Edrei, E.
AU - Zektzer, R.
AU - Shastri, K.
AU - Levy, U.
AU - Monticone, F.
N1 - Publisher Copyright:
© 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
PY - 2021/4/20
Y1 - 2021/4/20
N2 - Non-Hermitian systems have recently attracted significant attention in photonics. One of the hallmarks of these systems is the possibility of realizing asymmetric mode-switching and omni-polarizer action through the dynamic encirclement of exceptional points (EPs). Here, we offer a new perspective on the operating principle of these devices, and we theoretically and experimentally show that linear asymmetric mode-switching and omni-polarizer action can be easily realized-with the same performance and limitations-using simple configurations that emulate the physics involved in encircling EPs without the complexity of actual encirclement schemes. The proposed concept of “encirclement emulators” and our theoretical and experimental results may allow better assessment of the limitations, practical potential, and applications of EP encirclements in non-Hermitian photonics.
AB - Non-Hermitian systems have recently attracted significant attention in photonics. One of the hallmarks of these systems is the possibility of realizing asymmetric mode-switching and omni-polarizer action through the dynamic encirclement of exceptional points (EPs). Here, we offer a new perspective on the operating principle of these devices, and we theoretically and experimentally show that linear asymmetric mode-switching and omni-polarizer action can be easily realized-with the same performance and limitations-using simple configurations that emulate the physics involved in encircling EPs without the complexity of actual encirclement schemes. The proposed concept of “encirclement emulators” and our theoretical and experimental results may allow better assessment of the limitations, practical potential, and applications of EP encirclements in non-Hermitian photonics.
UR - http://www.scopus.com/inward/record.url?scp=85105275916&partnerID=8YFLogxK
U2 - 10.1364/OPTICA.412981
DO - 10.1364/OPTICA.412981
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AN - SCOPUS:85105275916
SN - 2334-2536
VL - 8
SP - 563
EP - 569
JO - Optica
JF - Optica
IS - 4
ER -