Y
Yu Tanaka
Researcher at Fujitsu
Publications - 58
Citations - 846
Yu Tanaka is an academic researcher from Fujitsu. The author has contributed to research in topics: Photonic crystal & Photonic integrated circuit. The author has an hindex of 13, co-authored 47 publications receiving 784 citations.
Papers
More filters
Journal ArticleDOI
Ultra-fast photonic crystal/quantum dot alloptical switch for future photonic networks.
Hitoshi Nakamura,Yoshimasa Sugimoto,Kyozo Kanamoto,Naoki Ikeda,Yu Tanaka,Yusui Nakamura,Shunsuke Ohkouchi,Yoshinori Watanabe,Kuon Inoue,Hiroshi Ishikawa,Kiyoshi Asakawa +10 more
TL;DR: A novel two-dimensional photonic-crystal based Symmetric Mach Zehnder type all-optical switch with InAs quantum dots acting as a nonlinear phase-shift source with a 15-ps-wide switching-window at sufficiently low optical-energy of ~100 fJ.
Journal ArticleDOI
Low propagation loss of 0.76 dB/mm in GaAs-based single-line-defect two-dimensional photonic crystal slab waveguides up to 1 cm in length
TL;DR: Straight single-line-defect photonic crystal waveguides on GaAs slabs with lengths of 1, 4, and 10 mm have been fabricated by controlling the Al content of a sacrificial AlGaAs clad layer and the wet etching duration to obtain a PC core layer with a very smooth surface.
Journal ArticleDOI
Design, fabrication, and characterization of coupling-strength-controlled directional coupler based on two-dimensional photonic-crystal slab waveguides
Yoshimasa Sugimoto,Yu Tanaka,Naoki Ikeda,T. Yang,H. Nakamura,K. Asakawa,Kuon Inoue,T. Maruyama,K. Miyashita,K. Ishida,Y. Watanabe +10 more
TL;DR: In this paper, a two-dimensional photonic-crystal slab waveguide with a coupling-strength control defect (CCD) based on a 2D photonic crystal waveguide is numerically and experimentally studied.
Journal ArticleDOI
Self-phase modulation in photonic-crystal-slab line-defect waveguides
Hisaya Oda,Kuon Inoue,Yu Tanaka,N. Ikeda,Yoshimasa Sugimoto,Hiroshi Ishikawa,Kiyoshi Asakawa +6 more
TL;DR: In this article, the authors observed self-phase modulation in spectral domain at 1.50μm in AlxGa1−xAs-based photonic-crystal-slab line-defect waveguides.
Journal ArticleDOI
InAs quantum-dot laser utilizing GaAs photonic-crystal line-defect waveguide.
Kuon Inoue,Hidekazu Sasaki,Koji Ishida,Yoshimasa Sugimoto,Naoki Ikeda,Yu Tanaka,Shunsuke Ohkouchi,Yusui Nakamura,Kiyoshi Asakawa +8 more
TL;DR: Compact laser action from optically-pumped InAs-quantum-dots embedded in a line-defect waveguide in an air-bridge type GaAs-photonic-crystal slab found to occur without any optical cavity such as a set of Fabry-Perot mirrors is observed.