[I-1-4] Reducing Operation Voltage of Silicon-Ring Optical Modulator using High-k Cladding Layer Y. Amemiya1, M. Nishida1, H. Ding1, M. Fukuyama1, S. Yokoyama1 (1.Hiroshima Univ.) https://doi.org/10.7567/SSDM.2009.I-1-4