Wikipedia

Masataka Nakazawa

Masataka Nakazawa (born 17 September 1952) is a Japanese researcher in optical communication engineering. He is a distinguished professor at Tohoku University in Japan.[1] His pioneering work on erbium-doped fiber amplifier (EDFA) has made a significant contribution to the development of global long-distance, high-capacity optical fiber network.[1]

Masataka Nakazawa
中沢正隆
Born (1952-09-17) 17 September 1952 (age 72)
Yamanashi, Japan
NationalityJapanese
CitizenshipJapan
Alma materKanazawa University
Tokyo Institute of Technology
Known forErbium-doped fiber amplifier (EDFA)
Backward Raman amplification
Quadrature amplitude modulation
AwardsIEEE Daniel E. Noble Award (2002)
R. W. Wood Prize (2005)
Japan Academy Prize (2013)
Japan Prize (2023)
Scientific career
FieldsElectronics engineering
InstitutionsTohoku University
Massachusetts Institute of Technology
Nippon Telegraph & Telephone Public Corporation

Biography

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Masataka Nakazawa received B. S. in Electronics from Kanazawa University in 1975, M. S. in Physical Electronics from Tokyo Institute of Technology in 1977, and Ph. D. in Applied Electronics from Tokyo Institute of Technology in 1980.[1] After receiving a Ph. D. degree, he joined the Electrical Communication Laboratory of Nippon Telegraph & Telephone Public Corporation in 1980.[1] He was a visiting scientist at Massachusetts Institute of Technology in 1984.[1] In 1999, he became an NTT R&D Fellow.[1] Then, in 2001, he moved to the Research Institute of Electrical Communication (RIEC) at Tohoku University. He became a distinguished professor (DP) in 2008 and the director of RIEC in 2010.[1] He also served as the director of Japan Council for Research Institutes and Centers of National Universities and of Research Organization of Electrical Communication (ROEC) in 2011.[1] Currently, he is a director of Kanazawa University (part time) and a specially appointed professor/ distinguished professor at the International Research Institute of Disaster Science at Tohoku University[1]

Research

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He introduced erbium ions into optical communication in 1984, when he constructed the first erbium (Er3+): glass laser operating at 1.55 μm,[2] and then used it as an optical time domain reflectometer (OTDR). This enabled a fault to be located in a 130 km-long single-mode fiber, which remains the world record distance.[3] He then began research on an erbium-doped fiber laser in 1987 [4] and amplifier in 1989.[5] After Dr. R. J. Mears of Prof. Payne’s group reported the first EDFA in 1987,[6] Dr. Nakazawa used a 1.48 μm InGaAsP laser diode (LD) to pump the erbium fiber[5] and reported the highest gain of 46.5 dB in 1989[7] after employing the LD for Raman amplification at 1.55 μm in 1988.[8] He invented the LD pumped erbium-doped fiber amplifier (EDFA),[5] which made it possible to construct a compact, reliable, and low-power consumption optical repeater for high-speed, high-capacity, and long-distance optical communication systems. He also reported backward Raman amplification in 1984,[9] which remains in commercial use.

He subsequently undertook intensive work on high-speed optical transmission technology using ultrashort Gaussian pulses,[10] optical solitons,[11][12][13] optical Fourier transformation,[14] and Nyquist pulses.[15] Nakazawa’s work spans diverse areas of photonics including optical communication, various fiber lasers,[16][17] and quadrature amplitude modulation (QAM) coherent transmission with the highest multiplicity of 4096.[18] Recently, he has been concentrating on Mode locking technology for the generation of various optical pulses [19] and a QAM quantum noise stream cipher with continuous variable quantum key distribution (QKD).[20]

He has published more than 500 academic journal papers[21] and given 400 international conference presentations. During his 40-year career he has received 5 paper awards and three centennial milestone certificates of commendation[22] from the Institute of Electronics, Information, and Communication Engineers (IEICE).

Professional society membership

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He is a Fellow and Honorary Member of the Institute of Electronics, Information, and Communication Engineers (IEICE),[23] a Fellow of the Japan Society of Applied Physics (JSAP),[24] a Life Fellow of IEEE,[21] and a Fellow Emeritus, OPTICA (formerly OSA).[25] He also served as a Director at Large of the Optical Society of America (OSA) in 2007,[26] on the Board of Governors of the IEEE Photonics Society in 2013,[21] and as the President of IEICE in 2019[27]

Awards and honors

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References

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  1. ^ a b c d e f g h i j "The Japan Prize Foundation – The 2023 Japan Prize". The Japan Prize Foundation. Archived from the original on 2023-03-08. Retrieved 2023-03-07.
  2. ^ Morishige, Y.; Kishida, S.; Washio, K.; Toratani, H.; Nakazawa, M. (1984). "Output-stabilized high-repetition-rate 1.545-μm Q-switched Er:glass laser". Optics Letters. 9 (5): 147–149. doi:10.1364/OL.9.000147. PMID 19721525.
  3. ^ Nakazawa, M.; Tokuda, M.; Washio, K.; Asahara, Y. (1984). "130-km long fault location for single-mode optical fiber using 1.55 μm Q-switched Er3+: glass laser". Optics Letters. 9 (7): 312–314. doi:10.1364/ol.9.000312. PMID 19721581.
  4. ^ Nakazawa, M.; Kimura, Y. (1987). "Simultaneous oscillation at 0.91, 1.08, 1.53 μm in a fusion-spliced fiber laser". Applied Physics Letters. 51 (22): 1768–1770. doi:10.1063/1.98516.
  5. ^ a b c Nakazawa, M.; Kimura, Y.; Suzuki, K. (1989). "Efficient Er3+-doped optical fiber amplifier pumped by a 1.48 μm InGaAsP laser diode". Applied Physics Letters. 54 (4): 295–297. doi:10.1063/1.101448.
  6. ^ Mears, R. J.; Reekie, L.; Jauncy, I. M.; Payne, D. N. (1987). "Low-noise erbium-doped fibre amplifier operating at 1.54 mm" (PDF). Electronics Letters. 23 (19). IEE: 1026–1028. Bibcode:1987ElL....23.1026M. doi:10.1049/el:19870719.
  7. ^ Kimura, Y.; Suzuki, K.; Nakazawa, M. (1989). "46.5 dB gain in Er3+-doped fibre amplifier pumped by 1.48 μm GaInAsP laser diodes". Electronics Letters. 25 (24): 1656–1657. Bibcode:1989ElL....25.1656K. doi:10.1049/el:19891110.
  8. ^ Suzuki, K.; Nakazawa, M. (1988). "Raman amplification in P2O5 doped silica fibers". International Quantum Electronics Conference (IQEC). Tokyo, Japan: MP43.
  9. ^ Nakazawa, M.; Tokuda, M.; Negishi, Y.; Uchida, N. (1984). "Active transmission line: Light amplification by backward stimulated Raman scattering in polarization-maintaining optical fiber". Journal of the Optical Society of America B. l (1): 80–85. Bibcode:1984JOSAB...1...80N. doi:10.1364/JOSAB.1.000080.
  10. ^ Nakazawa, M.; Yamamoto, T.; Tamura, K.R. (2000). "1.28 Tbit/s–70 km OTDM transmission using third- and fourth-order simultaneous dispersion compensation with a phase modulator". Electronics Letters. 36 (24). IEE: 2027–2029. Bibcode:2000ElL....36.2027N. doi:10.1049/el:20001391.
  11. ^ Nakazawa, M.; Kimura, Y.; Suzuki, K. (1989). "Soliton amplification and transmission with Er3+-doped fibre repeater pumped by GaInAsP laser diode". Electronics Letters. 25 (3): 199–200. Bibcode:1989ElL....25..199N. doi:10.1049/el:19890143.
  12. ^ Nakazawa, M.; Suzuki, K.; Kimura, Y. (1990). "3.2-5 Gb/s, 100 km error-free soliton transmission with erbium amplifiers and repeaters". IEEE Photonics Technology Letters. 2 (3): 216–219. Bibcode:1990IPTL....2..216N. doi:10.1109/68.50894. S2CID 7735296.
  13. ^ Nakazawa, M.; Yamada, E.; Kubota, H.; Suzuki, K. (1991). "10 Gbit/s soliton data transmission over one million kilometres". Electronics Letters. 27 (14): 1270–1272. Bibcode:1991ElL....27.1270N. doi:10.1049/el:19910796.
  14. ^ Nakazawa, M.; Hirooka, T. (2005). "Distortion-free optical transmission using time-domain optical Fourier transformation and transform-limited optical pulses". Journal of the Optical Society of America B. 22 (9): 1842–1855. Bibcode:2005JOSAB..22.1842N. doi:10.1364/JOSAB.22.001842.
  15. ^ Nakazawa, M.; Hirooka, T.; Ruan, P.; Guan, P. (2012). "Ultrahigh-speed "orthogonal" TDM transmission with an optical Nyquist pulse train". Optics Express. 20 (2): 1129–1140. Bibcode:2012OExpr..20.1129N. doi:10.1364/OE.20.001129. PMID 22274458.
  16. ^ Nakazawa, M.; Yoshida, E.; Kimura, Y. (1994). "Ultrastable harmonically and regeneratively modelocked polarisation-maintaining erbium fibre ring laser". Electronics Letters. 30 (19): 1603–1604. Bibcode:1994ElL....30.1603N. doi:10.1049/el:19941072.
  17. ^ Kasai, K.; Yoshida, M.; Nakazawa, M. (September 2005). "Acetylene (13C2H2) stabilized single-polarization fiber laser". IEICE Trans. Electron. J88-C (9): 708–715.
  18. ^ Terayama, M.; Okamoto, S.; Kasai, K.; Yoshida, M.; Nakazawa, M. (2018). "4096 QAM (72 Gbit/s) single-carrier coherent optical transmission with a potential SE of 15.8 bit/s/Hz in all-Raman amplified 160 km fiber link". Optical Fiber Communications Conference and Exposition (OFC). pp. 1–3. ISBN 978-1-943580-38-5.
  19. ^ Nakazawa, M.; Hirooka, T. (2022). "Theory of FM Mode-Locking of a Laser as an Arbitrary Optical Function Generator". IEEE Journal of Quantum Electronics. 58 (2): 1–25. Bibcode:2022IJQE...5843521N. doi:10.1109/JQE.2022.3143521. S2CID 245968790.
  20. ^ Nakazawa, M.; et al. (2017). "QAM Quantum Noise Stream Cipher Transmission Over 100 km With Continuous Variable Quantum Key Distribution". IEEE Journal of Quantum Electronics. 53 (4): 1–16. doi:10.1109/JQE.2017.2708523. S2CID 39497552.
  21. ^ a b c d "Archived copy". Archived from the original on 2022-09-13. Retrieved 2023-03-07.{{cite web}}: CS1 maint: archived copy as title (link)
  22. ^ "電子情報通信学会マイルストーン | 一般社団法人 電子情報通信学会". www.ieice.org. Archived from the original on 2023-03-08. Retrieved 2023-03-08.
  23. ^ a b "Masataka NAKAZAWA | Honorary Member | New Honorary Members, Award Winners in 2017 | IEICE The Institute of Electronics, Information and Communication Engineers". www.ieice.org. Archived from the original on 2023-03-07. Retrieved 2023-03-07.
  24. ^ "4th JSAP Fellow (2010) |". Archived from the original on 2023-03-08. Retrieved 2023-03-08.
  25. ^ a b "Masataka Nakazawa | Living History | Optica". www.optica.org. Archived from the original on 2023-03-07. Retrieved 2023-03-07.
  26. ^ "OSA Elects 2008 Vice President, James C. Wyant | News Releases | Optica". www.optica.org. Archived from the original on 2023-03-08. Retrieved 2023-03-08.
  27. ^ "President List | IEICE The Institute of Electronics, Information and Communication Engineers". www.ieice.org. Archived from the original on 2023-04-01. Retrieved 2023-03-08.
  28. ^ "櫻井健二郎氏記念賞歴代受賞者". www.oitda.or.jp. Archived from the original on 2023-03-07. Retrieved 2023-03-07.
  29. ^ "Archived copy" (PDF). Institute of Electrical and Electronics Engineers (IEEE). Archived (PDF) from the original on 2019-12-26. Retrieved 2023-03-07.{{cite web}}: CS1 maint: archived copy as title (link)
  30. ^ "Archived copy" (PDF). Archived (PDF) from the original on 2016-08-20. Retrieved 2023-03-07.{{cite web}}: CS1 maint: archived copy as title (link)
  31. ^ "市村産業賞" [Ichimura Industrial Award]. www.sgkz.or.jp. Archived from the original on 2023-03-07. Retrieved 2023-03-07.
  32. ^ "R. W. Wood Prize – Awards – Optica.org | Optica". www.optica.org. Archived from the original on 2022-12-01. Retrieved 2023-03-07.
  33. ^ "第８回 産学官連携推進会議". www8.cao.go.jp. Archived from the original on 2023-03-07. Retrieved 2023-03-07.
  34. ^ "Quantum Electronics Award – IEEE Photonics Society". Archived from the original on 2023-03-07. Retrieved 2023-03-07.
  35. ^ "The Imperial Prize, Japan Academy Prize, Duke of Edinburgh Prize Recipients 101st–110th | The Japan Academy". www.japan-acad.go.jp. Archived from the original on 2023-03-07. Retrieved 2023-03-07.
  36. ^ "NEC C&C Foundation". www.candc.or.jp. Archived from the original on 2023-03-07. Retrieved 2023-03-07.
  37. ^ "Charles Hard Townes Award | Awards | Optica". www.optica.org. Archived from the original on 2023-03-29. Retrieved 2023-03-07.
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