Bistability patterns and nonlinear switching with very high contrast ratio in a 1550 nm quantum dash semiconductor laser

Hurtado, A. and Nami, M. and Henning, I. D. and Adams, M. J. and Lester, L. F. (2012) Bistability patterns and nonlinear switching with very high contrast ratio in a 1550 nm quantum dash semiconductor laser. Applied Physics Letters, 101 (16). ISSN 0003-6951

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Abstract

We report on the experimental observation of optical bistability (OB) and nonlinear switching (NS) in a nanostructure laser; specifically a 1550 nm quantum dash Fabry-Perot laser subject to external optical injection and operated in reflection. Different shapes of optical bistability and nonlinear switching, anticlockwise and clockwise, with very high on-off contrast ratio (up to 180:1) between output states were experimentally measured. These results added to the potential of nanostructure lasers for enhanced performance offer promise for use in fast all-optical signal processing applications in optical networks.