Semiconductor ring lasers coupled by a single waveguide

Coomans, W., Gelens, L., Van der Sande, G., Mezosi, G., Sorel, M., Danckaert, J. and Verschaffelt, G. (2012) Semiconductor ring lasers coupled by a single waveguide. Applied Physics Letters, 100(25), p. 251114. (doi:10.1063/1.4730615)

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Abstract

We experimentally and theoretically study the characteristics of semiconductor ring lasers bidirectionally coupled by a single bus waveguide. This configuration has, e.g., been suggested for use as an optical memory and as an optical neural network motif. The main results are that the coupling can destabilize the state in which both rings lase in the same direction, and it brings to life a state with equal powers at both outputs. These are both undesirable for optical memory operation. Although the coupling between the rings is bidirectional, the destabilization occurs due to behavior similar to an optically injected laser system.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Mezosi, Mr Gabor and Sorel, Professor Marc
Authors: Coomans, W., Gelens, L., Van der Sande, G., Mezosi, G., Sorel, M., Danckaert, J., and Verschaffelt, G.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Applied Physics Letters
ISSN:0003-6951
Published Online:22 June 2012

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