[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