Author Affiliations

M. Principe,^a M. Consales,^a A. Micco,^a A. Crescitelli,^c G. Castaldi,^b E. Esposito,^c V. La Ferrara,^d A. Cutolo,^a V. Galdi,^b and A. Cusano^a

^aOptoelectronic Division, Engineering Dept, University of Sannio, I-82100 Benevento, Italy

^bWaves Group, Engineering Dept., University of Sannio, I-82100 Benevento, Italy

^cInstitute for Microelectronics and Microsystems, National Research Council, I-80131, Napoli, Italy

^dUTTP-MDB, Materials and devices, ENEA - Portici Research Center, I-80055 Portici (NA), Italy