The 2023 Japan Prize

• Field:
  Electronics, Information, and Communication
• Achievement:
  Distinguished contributions to global long-distance, high-capacity optical fiber network through the development of semiconductor laser pumped optical amplifier
• Lecture：
  半導体レーザ励起光増幅器の開発を中心とする光ファイバ網の長距離大容量化

Education

1978	Tokyo Institute of Technology, BA
1980	Tokyo Institute of Technology, MS

Professional Experience

1980	Research, Yokosuka Electrical Communications Laboratry, Nippon Telegraph and Telephone Public Corporation
1994	Group Leader, NTT Transmission Laboratory
1998	Senior Manager, Long Distance Service Unit, NTT
2000	Head, NTT Media Networking Laboratory
2005	Head, NTT Network Innovation Laboratory
2009	Head, NTT Science and Core Research Laboratory Group
2013	President and CEO, NTT Electronics Corporation
2019	Fellow, NTT Electronics Corporation (to present)
2021	Program Director of Beyond 5G R&D Program Project, National Institute of Information and Communications Technology (to present)

Academic Journals

• K. Hagimoto, K. Iwatsuki, A. Takada, M. Nakazawa, M. Saruwatari, K. Aida, K. Nakagawa, and M. Horiguchi, (1989), “A 212 km non-repeatered transmission experiment at 1.8 Gb/s using LD pumped Er3+-doped fiber amplifiers in an IM/direct-detection repeater system,” Optical Fiber Communication Conference (OFC), PD15.
• K. Hagimoto, K. Iwatsuki, A. Takeda, M. Nakazawa, M. Saruwatari, K. Nakagawa, and M. Horiguchi, (1989), “250 km nonrepeatered transmission experiment at 1.8 Gb/s using LD pumped Er3+-doped fibre amplifiers in IM/direct detection system,” Electronics Letters, vol. 25, no. 10, pp. 662-664.
• K. Hagimoto, S. Nishi, and K. Nakagawa, (1990), “An optical bit-rate flexible transmission system with 5-Tb/s-km capacity employing multiple in-line erbium-doped fiber amplifiers,” IEEE/OSA Journal of Lightwave Technology, vol. 8, no. 9, pp. 1387-1395.

Awards

1989	the Sakurai Memorial Prize from the OITDA
1991	the Oliver Lodge premium from the IEE
1994	the Kenjiro Takayanagi memorial award
1994 & 2006	the achievement awards from IEICE
2007	Maejima Award from TEISHIN association Japan
2008	IEEE Fellow
2009	Prime Minister Award of SANGAKUKAN Innovation Contribution
2013	Distinguished Achievement and Contributions Award of IEICE
2016	The medal with Purple Ribbon from the Emperor of Japan