title: Broadband waveguide intersection with low crosstalk in two-dimensional photonic crystal circuits by using topology optimization.
abstract: Topology optimization has been used to design intersections in two-dimensional photonic crystal slab waveguides. We have experimentally confirmed that the optimized intersection displays high-transmittance with low-crosstalk for the straightforward beam-propagation line.
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Watanabe
authors.forename: Yoshimasa
authors.initials: Y
authors.lastname: Sugimoto
authors.forename: Naoki
authors.initials: N
authors.lastname: Ikeda
authors.forename: Nobuhiko
authors.initials: N
authors.lastname: Ozaki
authors.forename: Akio
authors.initials: A
authors.lastname: Mizutani
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Takata
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Kitagawa
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Asakawa