A 2.125-Gb/s BiCMOS fiber channel transmitter for serial data communications. - Muneo Fukaishi; Satoshi Nakamura; Akio Tajima; Yasushi Kinoshita; Yoshihiko Suemura; Hisamitsu Suzuki; Toshiro Itani; Hidenobu Miyamoto; Naoya Henmi; Tohru Yamazaki; Michio Yotsuyanagi (IEEE J. Solid State Circuits, 1999)

High Speed Quantum Key Distribution System. - Akio Tajima; Akihiro Tanaka; Seigo Takahashi; Ken-ichiro Yoshino; Yoshihiro Nambu (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2010)

Next Generation Optical Access Network: Standardization Outline and Key Technologies for Co-existence with Legacy Systems. - Akio Tajima; Hiroki Yanagisawa; Seigo Takahashi (IEICE Trans. Electron., 2010)

CW single-wavelength emission by using novel asymmetric configuration for active multi-mode interferometer laser diodes. - Yasuhiro Hinokuma; Yutaka Chaen; Haisong Jiang; Takuma Hagio; Seiki Nakamura; Akio Tajima; Kiichi Hamamoto (IEICE Electron. Express, 2012)

All-optical wide-area node connections assisted with optical parametric regeneration and wavelength conversion. - Junya Kurumida; Hitoshi Takeshita; Kenji Mizutani; Kiyo Ishii; Akio Tajima; Shu Namiki (OFC/NFOEC, 2013)

Prototype Highly Integrated 8×48 Transponder Aggregator Based on Si Photonics for Multi-Degree Colorless, Directionless, Contentionless Reconfigurable Optical Add/Drop Multiplexer. - Hitoshi Takeshita; Tomoyuki Hino; Kiyo Ishii; Junya Kurumida; Shu Namiki; Shigeru Nakamura; Shigeki Takahashi; Akio Tajima (IEICE Trans. Electron., 2013)

First demonstration of ultra-low-energy hierarchical multi-granular optical path network dynamically controlled through NSI-CS for video related applications. - Junya Kurumida; Kiyo Ishii; Atsuko Takefusa; Yusuke Tanimura; Shigeyuki Yanagimachi; Hitoshi Takeshita; Akio Tajima; Kiyoshi Fukuchi; H. Honma; W. Odashima; Hiroshi Onaka; Ken Tanizawa; et al. (ECOC, 2014)

A Proposal of Cyclic Sleep Control Technique for Backup Resources in ROADM Systems to Reduce Power Consumption of Photonic Network. - Tomoyuki Hino; Hitoshi Takeshita; Kiyo Ishii; Junya Kurumida; Shu Namiki; Shigeru Nakamura; Akio Tajima (IEICE Trans. Commun., 2014)

Split pump region in 1.55 μm InGaAsP/InGaAsP asymmetric active multi-mode interferometer laser diode for improved modulation bandwidth. - Mohammad Nasir Uddin; Takaaki Kizu; Yasuhiro Hinokuma; Kazuhiro Tanabe; Akio Tajima; Kazutoshi Kato; Kiichi Hamamoto (IEICE Trans. Electron., 2014)

Utilization of spectrum slot fragmentation to improve network resource efficiency on elastic optical network. - Shinsuke Fujisawa; Hitoshi Takeshita; Tomoyuki Hino; Akio Tajima; Kiyoshi Fukuchi (OFC, 2015)

Compact and low-loss 8×8 silicon photonic switch module for transponder aggregators in CDC-ROADM application. - Shigeru Nakamura; Shigeyuki Yanagimachi; Hitoshi Takeshita; Akio Tajima; Tomoaki Kato; Tomoyuki Hino; Kiyoshi Fukuchi (OFC, 2015)

Optical Node with Passband Overlapped Filter and Impairment Aware Least Slot Count Path First Algorithm for Guardband-Less Elastic Optical Network. - Hitoshi Takeshita; Takefumi Oguma; Shinsuke Fujisawa; Baku Yatabe; Yuta Suzuki; Akio Tajima; Emmanuel Le Taillandier de Gabory (ECOC, 2017)

Network fault protection performance enhancement by using elastic optical path. - Hitoshi Takeshita; Takefumi Oguma; Shinsuke Fujisawa; Yuta Suzuki; Baku Yatabe; Akio Tajima (OFC, 2017)

First Demonstration of Mode Selective Active Multimode Interferometer Laser Diode. - Bingzhou Hong; Takuya Kitano; Haisong Jiang; Akio Tajima; Kiichi Hamamoto (IEICE Trans. Electron., 2017)

Low-loss Silicon Photonic Switch Module Technology and Its Use for to Transponder Aggregators in Optical Network Nodes. - Shigeru Nakamura; Shigeyuki Yanagimachi; Hitoshi Takeshita; Akio Tajima (OFC, 2018)

Enhancing Protection Performance by Effectively Using Spectral Slots of Impairment-Aware Elastic Optical Networks [Invited]. - Hitoshi Takeshita; Takefumi Oguma; Shinsuke Fujisawa; Yuta Suzuki; Baku Yatabe; Akio Tajima; Hiroshi Hasegawa; Ken-ichi Sato (JOCN, 2018)

Submilisecond Control/Monitoring of Disaggregated Optical Node through a Direct Memory Access based Architecture. - Kiyo Ishii; Shigeyuki Yanagimachi; Akio Tajima; Shu Namiki (OFC, 2019)

A Method for Simulating an Information System with Life Cycle Simulation. - Tomoyuki Tamura; Ryota Odagaki; Yusuke Kishita; Yasushi Umeda; Gaku Miyake; Genichiro Matsuda; Akio Tajima (Int. J. Autom. Technol., 2024)