Abstract

We report ring resonators on a silicon germanium on silicon platform operating in the mid-infrared wavelength range around 3.5–4.6 µm with quality factors reaching up to one million. Advances in fabrication technology enable us to demonstrate such high Q-factors, which put silicon germanium at the forefront of mid-infrared integrated photonic platforms. The achievement of high Q is attested by the observation of degeneracy lifting between clockwise (CW) and counter-clockwise (CCW) resonances, as well as optical bistability due to an efficient power buildup in the rings.

Details

Title
One million quality factor integrated ring resonators in the mid-infrared
Author
Perestjuk, Marko 1 ; Armand, Rémi 2 ; Sandoval Campos, Miguel Gerardo 2 ; Lamine Ferhat 2 ; Reboud, Vincent 3 ; Bresson, Nicolas 3 ; Hartmann, Jean-Michel 3 ; Mathieu, Vincent 3 ; Ren, Guanghui 4 ; Boes, Andreas 5 ; Mitchell, Arnan 4 ; Monat, Christelle 2 ; Grillet, Christian 2 

 Ecole Centrale de Lyon, INSA Lyon, CNRS, Universite Claude Bernard Lyon 1, CPE Lyon, INL, UMR5270, 69130 Ecully, France; School of Engineering, RMIT University, Melbourne, VIC 3001, Australia 
 Ecole Centrale de Lyon, INSA Lyon, CNRS, Universite Claude Bernard Lyon 1, CPE Lyon, INL, UMR5270, 69130 Ecully, France 
 Université Grenoble Alpes, CEA-Leti, 38054 Grenoble, France 
 School of Engineering, RMIT University, Melbourne, VIC 3001, Australia 
 Institute for Photonics and Advanced Sensing & School of Electrical and Mechanical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia 
Pages
1009-1015
Publication year
2025
Publication date
2025
Publisher
Walter de Gruyter GmbH
ISSN
21928606
e-ISSN
21928614
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
3187934797
Copyright
© 2025. This work is published under http://creativecommons.org/licenses/by/4.0 (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.