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Modal properties of all-active InGaAsP/InP microring lasers |
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| Authors: | I. Stamataki A. Kapsalis S. Mikroulis D. Syvridis M. Hamacher U. Troppenz H. Heidrich |
| Affiliation: | a Department of Informatics and Telecommunications, University of Athens, Athens GR 15784, Greece b Department of Physics, Division of Applied Physics, University of Athens, Athens GR 15784, Greece c Fraunhofer Institute fuer Nachrichtentechnik, Heinrich-Hertz Institute, Einsteinufer 37, D-10587 Berlin, Germany |
| Abstract: | An experimental investigation of the multimode dynamics of 1.55 μm-InGaAsP/InP microring lasers is demonstrated. Different operation regimes are observed, bidirectional multimode, unidirectional single mode, bidirectional single mode and mode-hopping. The extent of each of the above operation regimes is examined with respect to the ring current level, bus waveguide reflectivity and ring radius. The back-reflections generated from the bus waveguide facets are indirectly controlled via the bus waveguide current. In order to clarify the physical mechanisms beyond experimental results, a multimode model based on the rate equation approximation is utilized. The experimental results are in good agreement to those predicted by the multimode model. |
| Keywords: | Microring lasers Nonlinear optics Bidirectional operation Unidirectional operation Mode-hopping |
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