Scientific Results

Unidirectional reflection from an integrated “taiji” microresonator

Year: 2020

Authors: Calabrese A., Ramiro-Manzano F., Price HM., Biasi S., Bernard M., Ghulinyan M., Carusotto I., Pavesi L.

Autors Affiliation: Univ Paris, CNRS, Paris Sci & Lettres, Lab Phys,Ecole Normale Super,ENS, F-75005 Paris, France; Inst Tecnol Quim CSIC UPV, Av Naranjos, Valencia 46022, Spain; Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England; Univ Trento, Dipartimento Fis, Nanosci Lab, Via Sommar 14, I-38123 Povo, TN, Italy; Fdn Bruno Kessler, Ctr Mat & Microsyst, Via Sommar 18, I-38123 Povo, TN, Italy; Univ Trento, INO CNR BEC Ctr, Via Sommar 14, I-38123 Povo, Italy; Univ Trento, Dept Phys, Via Sommar 14, I-38123 Povo, Italy

Abstract: We study light transmission and reflection from an integrated microresonator device, formed by a circular microresonator coupled to a bus waveguide, with an embedded S-shaped additional crossover waveguide element that selectively couples counter-propagating modes in a propagation-direction-dependent way. The overall shape of the device resembles a “taiji” symbol, hence its name. While Lorentz reciprocity is preserved in transmission, the peculiar geometry allows us to exploit the non-Hermitian nature of the system to obtain high-contrast unidirectional reflection with negligible reflection for light incident in one direction and a significant reflection in the opposite direction. (C) 2020 Chinese Laser Press

Journal/Review: PHOTONICS RESEARCH

Volume: 8 (8)      Pages from: 1333  to: 1341

KeyWords: WAVE-GUIDE
DOI: 10.1364/PRJ.393070

Citations: 7
data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2021-12-05
References taken from IsiWeb of Knowledge: (subscribers only)
Connecting to view paper tab on IsiWeb: Click here
Connecting to view citations from IsiWeb: Click here

gdpr-image
This site uses cookies. If you decide to continue browsing we consider that you accept their use. For more information about cookies and how to delete them please read our Info Policy on cookies use.
Read more