Nippon Telegraph and Telephone Corporation

Chiharu Takahashi

Koji Yamada

Junichi Takahashi

Akihiko Shinya

Masaya Notomi

Itaru Yokohama

A two-dimensional photonic crystal slab waveguide is provided in which a line defect is formed, wherein a first width which is a distance between centers of nearest two lattice points located on both sides of the line defect is different from a second width which is a corresponding distance in a normal two-dimensional photonic crystal slab waveguide. In addition, a two-dimensional photonic crystal slab waveguide is provided in which low refractive index columns in a optical waveguide part are placed at positions shifted from normal positions in a normal two-dimensional photonic crystal slab.

Growing community of inventors

Isehara, Japan

Chiharu Takahashi