All-optical modulation in a CMOS-compatible amorphous silicon-based device S. Rao, C. D’Addio and F. G. Della Corte J. Eur. Opt. Soc.-Rapid Publ., 7 (2012) 12023 Published online: 24 June 2012 DOI: 10.2971/jeos.2012.12023