フェロー／上席特別研究員／特別研究員

表彰

• 1996年　論文賞（国際会議OECC）
• 2004年　技術賞（日経BP）
• 2011年　論文賞（電子情報通信学会）
• 2012年　業績賞（電子情報通信学会）
• 2015年　前島密賞（通信文化協会）
• 2016年　論文賞（国際会議ITU Kaleidoscope）
• 2017年　文部科学大臣賞（科学技術賞開発部門）
• 2019年　論文賞（国際会議OECC）
• 2021年　論文賞（国際会議Photonics West）

学会役員等

• 2009年～　　　 　国際標準化ITU-T SG15 課題5 ラポータ
• 2011年～2019年　国際会議OFS プログラム委員
• 2013年～2023年　情報通信技術委員会 光ファイバ伝送専門委員会 委員長
• 2014年～2017年　国際会議OFC プログラム委員
• 2014年～2025年　応用物理学会 光波センシング研究会 常任理事
• 2017年～2019年　国際会議OECC2019 カテゴリ議長
• 2017年～2020年　国際会議ITU Kaleidoscope プログラム委員
• 2017年～　　　 　論文誌Optical Fiber Technology Associate Editor
• 2018年～2019年　国際会議EXATシンポジウム2019 プログラム委員長
• 2018年～2024年　電子情報通信学会 EXAT特別研専 副委員長
• 2018年～　　　　 科学技術専門家ネットワーク専門委員
• 2019年～2019年　IEEE Photonics Society Japan Chaptor委員長
• 2019年～2025年　国際会議Photonics West Conference Co-Chair
• 2024年～　　　　 電子情報通信学会 EXAT特別研専 委員長

著書

• 『DWDM光測定技術』（オプトロニクス社、分担執筆）
• 『Spce-Division Multiplexing in Optical Communication Systems』（Springer Nature、分担執筆）

最近の論文・トピック

1. Yongmin Jung, Masaki Wada, Kohki Shibahara, Saurabh Jain, Ian A. Davidson, Pranabesh Barua, John R. Hayes, Taiji Sakamoto, Takayuki Mizuno, Yutaka Miyamoto, Yusuke Sasaki, Kunimasa Saitoh, Kazuhide Nakajima, and David J. Richardson, "High Spatial Density 6-Mode 7-Core Fiber Amplifier for L-band Operation," J. Lightwave Technol., vol. 38, no. 11, pp. 2938-2943, June, 2020.
2. Taiji Sakamoto, Kunimasa Saitoh, Shota Saitoh, Yoshiteru Abe, Katsuhiro Takenaga, Azusa Urushibara, Masaki Wada, Takashi Matsui, Kazuhiko Aikawa, Kazuhide Nakajima, "Spatial Density and Splicing Characteristic Optimized Few-Mode Multi-Core Fiber," J. Lightwave Technol., vol. 38, no. 16, pp. 4490-4496, Aug., 2020.
3. Takashi Matsui, Yuto Sagae, Taiji Sakamoto, Kazuhide Nakajima, "Design and Applicability of Multi-Core Fibers with Standard Cladding Diameter," J. Lihtwave Technol., vol. 38, no. 21, pp. 6065-6070, Nov., 2020.
4. Sakamoto, M. Wada, S. Aozasa, R. Imada, T. Yamamoto and K. Nakajima, "Characteristics of Randomly Coupled 12-core Erbium-Doped Fiber Amplifier," J. Lightwave Technol., vol. 39, no. 4, pp. 1186-1193, 2021.
5. Takashi Matsui, Yusuke Yamada, Yuto Sagae and Kazuhide Nakajima, "Standard cladding diameter multi-core fiber technology," in Proc. OFC (Invited), 2021.
6. Jain, T. Sakamoto, Y. Jung, P. Barua, I. Davidson, J. Hayes, K. Shibahara, T. Mizuno, Y. Miyamoto, K. Nakajima, and D. J. Richardson, "High Spatial Channel Count Multicore SDM Amplifiers," in Proc. OFC (Invited), 2021.
7. Yizhou Wang, Takeshi Fujisawa, Yuto Sagae, Taiji Sakamoto, Takashi Matsui, Kazuhide Nakajima and Kunimasa Saitoh, "A Novel Core Allocation in Heterogeneous Step-Index Multi-Core Fibers with Standard Cladding Diameter," J. Lightrwave Technol., vol. 39, no. 22, pp. 7231-7237, Nov. 2021.
8. Sagae, T. Matsui, T. Sakamoto, T. Mori and K. Nakajima, "Phase Noise Correlation and Properties of Skew Between Heterogeneous Cores in MCF," in Journal of Lightwave Technology, vol. 40, no. 1, pp. 215-221, Jan.1, 2022, doi: 10.1109/JLT.2021.3118029.
9. Nakamura, Y. Koshikiya and K. Nakajima, "Optical Time Domain Reflectometry for Simultaneously Characterizing Forward and Backward Crosstalk Along Multi-Core Fibers," in Journal of Lightwave Technology, vol. 40, no. 18, pp. 6257-6263, 15 Sept.15, 2022, doi: 10.1109/JLT.2022.3190019.
10. Matsui, P. L. Pondillo and K. Nakajima, "Weakly Coupled Multicore Fiber Technology, Deployment, and Systems," in Proceedings of the IEEE, vol. 110, no. 11, pp. 1772-1785, Nov. 2022, doi: 10.1109/JPROC.2022.3202812.
11. Klaus, P. J. Winzer and K. Nakajima, "The Role of Parallelism in the Evolution of Optical Fiber Communication Systems," in Proceedings of the IEEE, vol. 110, no. 11, pp. 1619-1654, Nov. 2022, doi: 10.1109/JPROC.2022.3207920.
12. Sagae, T. Iwaya, T. Mori, T. Sakamoto, T. Matsui and K. Nakajima, "Crosstalk Noise in Bi-directional Transmission on Multi-core Fiber Link with Distributed Raman Amplifier," in Journal of Lightwave Technology, 2022, doi: 10.1109/JLT.2022.3220759.
13. Sagae, T. Iwaya, T. Mori, T. Sakamoto, T. Matsui and K. Nakajima, "Crosstalk Noise in Bi-Directional Transmission on Multi-Core Fiber Link With Distributed Raman Amplifier," in Journal of Lightwave Technology, vol. 41, no. 5, pp. 1519-1525, 1 March1, 2023, doi: 10.1109/JLT.2022.3220759.
14. Yamada, T. MORI, T. Matsui, M. Kikuchi, and K. Nakajima, "Optical Link Characteristics and Long-Term Stability of High-density Multi-Core Fiber Cables Deployed in the Terrestrial Field," in Optical Fiber Communication Conference (OFC) 2023, Technical Digest Series (Optica Publishing Group, 2023), paper M3B.6 (Invited).
15. Nakajima, "How can we consider multicore fibre standard?," ECOC, WS, 2023.
16. Takashi Matsui, Yuto Sagae, Yusuke Yamada, Kazuhide Nakajima, Yuushi Matsuo, Takanori Inoue, Kazunori Katayama, Yoshihisa Inada, "High Figure-of-Merit Multi-Core Fiber with Standard Cladding Diameter for 10,000 km-class Submarine Transmission," in Proc. ECOC, 2023 (Top Scored).
17. Miyamoaot, Y. Kisaka, H. Takahashi, T. Umeki, and K. Nakajima, "Key Enabling Technologies for High-Capacity Transport System with Channel Rate over Terabit per Second," in Proc. ECOC (invited), 2023.
18. Omoto, N. Hanzawa, K. Tsujikawa, T. Matsui and K. Nakajima, "Study on Hole-Assisted Single Mode Fiber With Low Rayleigh Scattering," in Journal of Lightwave Technology, vol. 41, no. 20, pp. 6571-6576, 15 Oct.15, 2023, doi: 10.1109/JLT.2023.3288882.
19. Takayoshi Mori, Yusuke Yamada, Kohki Shibahara, Takashi Matsui, Masashi Kikuchi, Yuto Sagae, Daiki Soma, Shohei Beppu, Takuji Nagashima, Tetsu Morishima, Tetsuya Hayashi, Masaki Ohzeki, Katsuhiro Takenaga, Masanori Takahashi, Tsubasa Sasaki, Ryuichi Sugizaki, Yutaka Miyamoto, Kazuhide Nakajima, "Applicability of Standard Cladding Diameter Multi-Core Fiber Cables for Terrestrial Field," in Journal of Lightwave Technology, Online early access, Nov. 16, 2023, doi: 10.1109/JLT.2023.3333429
20. Sakamoto, R. Imada and K. Nakajima, "Characterization of Effective Nonlinear Coefficient in Randomly Coupled Multi-Core Fiber," in Journal of Lightwave Technology, vol. 42, no. 13, pp. 4659-4665, 1 July1, 2024, doi: 10.1109/JLT.2024.3374766.
21. Imada, T. Sakamoto, S. Aozasa and K. Nakajima, "Mode-Dependent Gain Characteristic of Bent Coupled Multi-Core EDFA," in Journal of Lightwave Technology, vol. 42, no. 2, pp. 814-820, 15 Jan.15, 2024, doi: 10.1109/JLT.2023.3318576.
22. Mori et al., "Applicability of Standard Cladding Diameter Multi-Core Fiber Cables for Terrestrial Field," in Journal of Lightwave Technology, vol. 42, no. 3, pp. 1044-1055, 1 Feb.1, 2024, doi: 10.1109/JLT.2023.3333429.
23. Nakajima, "Optical fiber technology for sustainable growth," Workshop in OFC, 2024.
24. Sakamoto, M. Wada, R. Imada, and K. Nakajima, "Energy-efficient Cladding-pumped Amplifier for Coupled Multi-core Fiber Transmission," in Optical Fiber Communication Conference (OFC) 2024, Technical Digest Series (Optica Publishing Group, 2024), paper M2E.4 (Invited).
25. Matsui et al., "High Figure-of-Merit Multi-Core Fiber With Standard Cladding Diameter for Long-Haul and Wide-Band Transmission," in Journal of Lightwave Technology, vol. 42, no. 11, pp. 4124-4131, 1 June1, 2024, doi: 10.1109/JLT.2024.3352596.
26. Taniguchi et al., "1.6-Tb/s 10-km Transmission in O-Band Using 400-Gb/s/Lane SDM Channels Enhanced by Trellis Path-Limitation MLSE," in Journal of Lightwave Technology, vol. 42, no. 12, pp. 4338-4346, 15 June15, 2024, doi: 10.1109/JLT.2024.3407973.
27. Yamashita, M. Wada, T. Mori, T. Matsui and K. Nakajima, "Fiber-Based Inline Optical Tap With Tunable Wavelength and Bandwidths," in Journal of Lightwave Technology, vol. 42, no. 14, pp. 4997-5003, 15 July15, 2024, doi: 10.1109/JLT.2024.3382260.
28. Sakamoto, M. Wada, R. Imada and K. Nakajima, "Cladding-pumped Coupled 12-core Fiber Amplifier for Energy-efficient SDM Transmission," in Journal of Lightwave Technology, doi: 10.1109/JLT.2024.3432872.
29. Sagae, T. Matsui, T. Mori and K. Nakajima, "Single-Mode-Fiber Design for Low Latency and Low Loss," in Journal of Lightwave Technology, vol. 42, no. 16, pp. 5704-5709, 15 Aug.15, 2024, doi: 10.1109/JLT.2024.3400513.
30. Omoto, N. Hanzawa, M. Wada, K. Kurokawa, T. Matsui and K. Nakajima, "Study on stimulated Raman scattering threshold over Two-mode fiber," in Journal of Lightwave Technology, doi: 10.1109/JLT.2024.3440908.
31. Nakajima, "What kind of multi-core fibre should be standardized?," ECOC Workshop, 2024.
32. Kikuchi, T. Mori, Y. Yamada, Y. Sagae, T. Matsui and K. Nakajima, "A Novel Method for Evaluating Micro-Bending Sensitivity to Ensure Applicability to High-Density Optical Fiber Cable," in Journal of Lightwave Technology, vol. 42, no. 23, pp. 8428-8434, 1 Dec.1, 2024, doi: 10.1109/JLT.2024.3432603.
33. Wada, K. Kurokawa, T. Matsui, K. Omoto, H. Iida and K. Nakajima, "Standard Cladding Diameter 4-Core Fiber Based Power Over Fiber and Bi-Directional Data Transmission," in Journal of Lightwave Technology, vol. 42, no. 23, pp. 8414-8420, 1 Dec.1, 2024, doi: 10.1109/JLT.2024.3426545.
34. Imada, T. Sakamoto, T. Mori, Y. Yamada and K. Nakajima, "Bending Loss and Cut-Off Wavelength Properties of Randomly Coupled Multi-Core Fiber," in Journal of Lightwave Technology, vol. 42, no. 23, pp. 8442-8448, 1 Dec.1, 2024, doi: 10.1109/JLT.2024.3431533.
35. 世界初、空間多重信号光の強度差を自在に補償～IOWN構想がめざす1ペタ超の大容量光伝送に向け前進～ | ニュースリリース | NTT
36. 世界最高の給電能力を有した高速光通信の実証に成功～10km以上先の無電源地点に光ファイバを用いて電力供給～ | ニュースリリース | NTT
37. 世界初、空間分割多重技術を用いた伝送容量拡大と消費電力低減の両立に成功～マルチコア構造を用いた一括光増幅器により消費電力を67％低減～ | ニュースリリース | NTT
38. NECとNTT、世界初、12コア光ファイバーによる7,000km以上の長距離伝送実験に成功～大洋横断級光海底ケーブルの大容量化に向けて前進～ | ニュースリリース | NTT
39. 1本の光ファイバで4倍の大容量化を実現する、マルチコア光ファイバ技術の建設・運用・保守技術をラインナップ化～世界初の自動回転調心接続や既存光ファイバとの分岐／接続技術を確立～ | ニュースリリース | NTT
40. K. Nakajima, "Next-generation optical fibre technology: expectations and applications," ECOC'25, Plenary talk, 2025: ECOC 2025 - ECOC 2025.