Formulation of Waveguide Connection for Waveband MUX/DEMUX Using Concatenated Arrayed-Waveguide Gratings. - Shoji Kakehashi; Hiroshi Hasegawa; Ken-ichi Sato; Osamu Moriwaki (IEICE Trans. Commun., 2007)

Optical Cross-Connect Switch Architectures for Hierarchical Optical Path Networks. - Shoji Kakehashi; Hiroshi Hasegawa; Ken-ichi Sato (IEICE Trans. Commun., 2008)