title: Space-selectively crystallized fiber with second-order optical nonlinearity for variable optical attenuation.
abstract: We have fabricated BaO-TiO2-GeO2-SiO2-based glass fibers with the oriented space-selectively crystallized structure by laser irradiation and also demonstrated variable optical attenuation induced by electro-optical birefringence change based on second-order optical nonlinearity. The transmittance of a polarized signal is controlled by an electric field applied to the fiber, and the electro-optic fiber devices are operated with extremely low nanowatt electric power dissipation.
authors.affiliation: Asahi Glass Co., Ltd. Research Center, Yokohama, Japan. seiki-ohara@agc.co.jp
authors.forename: Seiki
authors.initials: S
authors.lastname: Ohara
authors.forename: Hirokazu
authors.initials: H
authors.lastname: Masai
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Takahashi
authors.forename: Takumi
authors.initials: T
authors.lastname: Fujiwara
authors.forename: Yuki
authors.initials: Y
authors.lastname: Kondo
authors.forename: Naoki
authors.initials: N
authors.lastname: Sugimoto