2002•Applied Physics LettersRequires access
Unidirectional bistability in semiconductor waveguide ring lasers
Marc Sorel, P.J.R. Laybourn, G. Giuliani, Silvano Donati
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Abstract
Large-diameter ridge-guided semiconductor lasers weakly coupled to a straight output waveguide show unidirectional operation and directional bistability at currents up to about twice the threshold. The direction of lasing in the ring may be controlled by biasing contacts at either end of the coupled guide.