博士課程の徳橋君のアクティブ型光アクセスネットワークに関する論文がElsevier journal Optical Switching and Networking　に採録されました。

論文については以下の通りです。

Title: MPCP based active optical access network with PLZT high-speed optical switch
Authors: Kazumasa Tokuhashi, Kunitaka Ashizawa, Daisuke Ishii, Satoru Okamoto, Naoaki Yamanaka, Koji Wakayama, Keiichi Nashimoto
Summary: An active optical access network architecture with our newly developed PLZT ((Pb,La)(Zr,Ti)O3) high-speed optical switch is introduced, with a view to realizing the next-generation high capacity scalable access network. This system is developed based on the latest IEEE standard of PON (10G-EPON; IEEE802.3av) in consideration of the coordination with future high capacity PON. PLZT high-speed optical switches are able to switch an optical signal at nano-second speed (<5–10 ns). Generally, the merits of using optical switches are increasing the number of subscribers and transmission distance easily, preventing malicious ONUs from interfacing with the communication between OLT and the other ONUs, realizing fast fiber and OLT protection/restoration and providing various services by controlling optical switches dynamically. This paper focuses on two key technologies; a PLZT optical switch and a new discovery process for active optical access network based on MPCP defined at IEEE802.3. A major challenge in designing active optical access network is supporting the discovery process of MPCP because it does not offer broadcast transmission unlike the regular PON. We propose here a new discovery process; it has been tested successfully in an implementation of our proposed system. Optical Switching and Networkingウェブサイト