Theory of gyrotropic ring resonators with counterpropagating modes coupling

Publikationstyp
Journal Article
Publikationsdatum
2011
Sprache
English
Author
Jalas, Dirk 
Petrov, Alexander orcid-logo
Eich, Manfred 
Institut
Optische und Elektronische Materialien E-12 
TORE-URI
http://hdl.handle.net/11420/13316
Enthalten in
Photonics and nanostructures 
Volume
9
Issue
4
Start Page
351
End Page
357
Citation
Photonics and Nanostructures - Fundamentals and Applications 9 (4): 351-357 (2011)
Contribution to Conference
TaCoNa-Photonics 2010 
Publisher DOI
10.1016/j.photonics.2011.04.013
Scopus ID
2-s2.0-80053189249
Publisher
Elsevier
The Faraday effect in ring resonators leads to the resonance splitting of clockwise and counter-clockwise propagating modes. In this work we investigate how this resonance splitting influences the ring resonator's behavior if both modes are coupled by a sidewall corrugation of the resonator. Coupled mode theory is used to evaluate the transmission and reflection characteristics of a ring resonator coupled to a waveguide. Based on these evaluations, we characterize a novel ring resonator switch. The resonance of the corrugated gyrotropic resonator coupled to a waveguide can be switched off by the application of the external magnetic field. In this case, the resonance is not shifted, as what typically occurs at small perturbations, but suppressed.
Schlagworte
Backscattering
Magneto-optical
Non-reciprocal
Ring resonator
DDC Class
530: Physik
600: Technik
620: Ingenieurwissenschaften