11:39 〜 11:42 [PS-9-14(Late News)] Optical Modulating Device using Phase Transition of [ (GeTe)2/ (Sb2Te3)]20 Superlattice ○T. Sugiyama1, A. Kubo1, T. Nakano2 (1.Univ. of Tsukuba(Japan), 2.AIST(Japan))