All optical switching in semiconductor microresonators based on pattern selection R. Kheradmand, M. Sahrai, H. Tajalli, G. Tissoni and L. A. Lugiato Eur. Phys. J. D, 47 1 (2008) 107-112 Published online: 05 March 2008 DOI: 10.1140/epjd/e2008-00037-y