A novel 2 × 2 multi-arm type of optical switch using multimode interference couplers. - Kenichi Masuda; Atsushi Tate; Hiroyuki Tsuda (IEICE Electron. Express, 2006)

Arrayed-waveguide grating with wavefront compensation lenses for spatial filter integration. - Mitsuhiro Yasumoto; Takanori Suzuki; Atsushi Tate; Hiroyuki Tsuda (IEICE Electron. Express, 2006)