Establishment of novel ultrahigh-speed distortion-free optical transmission technology using time-domain optical Fourier transformation

• Project/Area Number: 16002008
• Research Category: Grant-in-Aid for Specially Promoted Research
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering; Engineering
• Research Institution: Tohoku University
• Principal Investigator: NAKAZAWA Masataka Tohoku University, 電気通信研究所, 教授 (80333889)
• Co-Investigator(Kenkyū-buntansha): HIROOKA Toshihiko 東北大学, 電気通信研究所, 准教授 (40344733) ; YOSHIDA Masato 東北大学, 電気通信研究所, 助教 (10333890)
• Project Period (FY): 2004 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥423,020,000 (Direct Cost: ¥325,400,000、Indirect Cost: ¥97,620,000); Fiscal Year 2008: ¥80,470,000 (Direct Cost: ¥61,900,000、Indirect Cost: ¥18,570,000); Fiscal Year 2007: ¥76,830,000 (Direct Cost: ¥59,100,000、Indirect Cost: ¥17,730,000); Fiscal Year 2006: ¥51,480,000 (Direct Cost: ¥39,600,000、Indirect Cost: ¥11,880,000); Fiscal Year 2005: ¥109,070,000 (Direct Cost: ¥83,900,000、Indirect Cost: ¥25,170,000); Fiscal Year 2004: ¥105,170,000 (Direct Cost: ¥80,900,000、Indirect Cost: ¥24,270,000)
• Keywords: 時間領域光フーリエ変換 / 高速光伝送 / 光時分割多重 / 超短光パルス / フーリエ変換限界パルス / DPSK / 光多重分離 / 波長分割多重 / DQPSK / 光スイッチ / 光位相変調 / 波形歪み除去 / 適応等化

Research Abstract

本研究では時間領域光フーリエ変換(OFT : Optical Fourier Transformation)という新たな無歪み高速光伝送技術を提案し、高速伝送で問題となっていた様々な波形歪みを一括して除去する技術を確立した。特筆すべき成果として、160 Gbit/s-1,000 kmおよび320 Gbit/s-525 kmの長距離超高速伝送が挙げられる。これらは直線路における160〜320 Gbit/s伝送実験としてはいずれも世界最長の伝送距離を実現したものであり、さらにWDM(波長分割多重)と組み合わせることにより320 Gbit/sベースの大容量伝送をも初めて実現した。またこれらと並行して、OFTの性能を向上させるために、パラボラ形状の光パルスと信号光との相互位相変調による理想的な光フーリエ変換を提案し、それを実験により実証した。具体的には、アレイ導波路回折格子を用いた波形整形回路によりパラボラ光パルスを発生させ、これを用いて歪みを受けた信号光パルスに全光フーリエ変換を施した結果、従来の正弦波変調型フーリエ変換では取りきれなかった波形歪みを除去することに成功した。

Research Products

• [Journal Article] 160-Gb/s 200-km field transmission experiment with large PMD using a time-domain optical Fourier transformation technique (2008)
  • Author(s): M. Okazaki, P. Guan, T. Hirooka, M. Nakazawa, and T. Miyazaki
  • Journal Title: IEEE Photon. Technol. Lett vol. 20, no. 24 Pages: 2192-2194
  • Peer Reviewed
• [Journal Article] C2H2 absolutely optical frequency-stabilized and 40 GHz repetition-rate-stabilized, regeneratively mode-locked picosecond erbium fiber laser at 1.53 μm (2008)
  • Author(s): M. Nakazawa, K. Kasai, and M. Yoshida
  • Journal Title: Opt. Lett vol. 33, no. 22 Pages: 2641-2643
  • Peer Reviewed
• [Journal Article] 320-Gb/s single-polarization DPSK transmission over 525 km using time-domain optical Fourier transformation (2008)
  • Author(s): T. Hirooka, M. Okazaki, P. Guan, and M. Nakazawa
  • Journal Title: IEEE Photon. Technol. Lett vol. 20, no. 22 Pages: 1872-1874
  • Peer Reviewed
• [Journal Article] All-optical 40-GHz time-domain Fourier transformation using XPM with a dark parabolic pulse (2008)
  • Author(s): T. Hirooka and M. Nakazawa
  • Journal Title: IEEE Photon. Technol. Lett vol. 20, no. 22 Pages: 1869-1871
  • Peer Reviewed
• [Journal Article] Stimulated Brillouin scattering in ultrahigh-speed in-phase RZ and CS-RZ OTDM transmission (2008)
  • Author(s): T. Hirooka, K. Osawa, M. Okazaki, M. Nakazawa, and H. Murai
  • Journal Title: IEEE Photon. Technol. Lett vol. 20, no. 20 Pages: 1694-1696
  • Peer Reviewed
• [Journal Article] A straight-line 160-Gb/s DPSK transmission over 1000 km with time-domain optical Fourier transformation (2008)
  • Author(s): T. Hirooka, M. Okazaki, and M. Nakazawa
  • Journal Title: IEEE Photon. Technol. Lett vol. 20, no. 13 Pages: 1094-1096
  • Peer Reviewed
• [Journal Article] Bright and dark 40 GHz parabolic pulse generation using a picosecond optical pulse train and an arrayed waveguide grating (2008)
  • Author(s): T. Hirooka, M. Nakazawa, and K. Okamoto
  • Journal Title: Opt. Lett vol. 33, no. 10 Pages: 1102-1104
  • Peer Reviewed
• [Journal Article] Scheme for independently stabilizing the repetition rate and optical frequency of a laser using a regenerative mode-locking technique (2008)
  • Author(s): M. Nakazawa and M. Yoshida
  • Journal Title: Opt. Lett vol. 33. No. 10 Pages: 1059-1061
  • Peer Reviewed
• [Journal Article] Scheme for independently stabilizing the repetition rate and optical frequency of a laser using a regenerative mode-locking technique (2008)
  • Author(s): M. Nakazawa and M. Yoshida
  • Journal Title: Optics Letters 33 Pages: 1059-1061
  • Peer Reviewed
• [Journal Article] Bright and dark 40 GHz parabolic pulse generation using a picosecond optical pulse train and an arrayed waveguide grating (2008)
  • Author(s): T. Hirooka, M. Nakazawa, and K. Okamoto
  • Journal Title: Optics Letters 33 Pages: 1102-1104
  • Peer Reviewed
• [Journal Article] A straight-line 160-Gb/s DPSK transmission over 1000 km with time-domain optical Fourier transformation (2008)
  • Author(s): T. Hirooka, M. Okazaki, and M. Nakazawa
  • Journal Title: IEEE Photonics Technology Letters 20 Pages: 1094-1096
  • Peer Reviewed
• [Journal Article] Stimulated Brillouin scattering in ultrahigh-speed in-phase RZ and CS-RZ OTDM transmission (2008)
  • Author(s): T. Hirooka, K. Osawa, M. Okazaki, M. Nakazawa, and H. Murai
  • Journal Title: IEEE Photonics Technology Letters 20 Pages: 1694-1696
  • Peer Reviewed
• [Journal Article] All-optical 40-GHz time-domain Fourier transformation using XPM with a dark parabolic pulse (2008)
  • Author(s): T. Hirooka and M. Nakazawa
  • Journal Title: IEEE Photonics Technology Letters 20 Pages: 1869-1871
  • Peer Reviewed
• [Journal Article] 320-Gb/s single-polarization DPSK transmission over 525 km using time-domain optical Fourier transformation (2008)
  • Author(s): T. Hirooka, M. Okazaki, P. Guan, and M. Nakazawa
  • Journal Title: IEEE Photonics Technology Letters 20 Pages: 1872-1874
  • Peer Reviewed
• [Journal Article] C_2H_2 absolutely optical frequency-stabilized and 40 GHzrepetition-rate-stabilized, regeneratively mode-locked-picosecond erbium fiber laser at 1.53 μm (2008)
  • Author(s): M. Nakazawa, K. Kasai, and M. Yoshida
  • Journal Title: Optics Letters 30 Pages: 2641-2643
  • Peer Reviewed
• [Journal Article] 160-Gb/s 200-km field transmission experiment with largePMD using a time-domain optical Fourier transformation technique (2008)
  • Author(s): M. Okazaki, P. Guan, T. Hirooka, M. Nakazawa, and T. Miyazaki
  • Journal Title: IEEE Photonics Technology Letters 20 Pages: 2192-2194
  • Peer Reviewed
• [Journal Article] 40GHz bright and dark parabolic pulse generation using a picosecond optical pulse train and an arrayed waveguide grating (2008)
  • Author(s): T. Hirooka, M. Nakazawa, and K. Okamoto
  • Journal Title: Optics Letters 33(印刷中)
  • Peer Reviewed
• [Journal Article] Stimulated Brillouin scattering in ultrahigh-speed in-phase RZ and CS-RZOTDM transmission (2008)
  • Author(s): T. Hirooka, M. Okazaki, M. Nakazawa, and H. Murai
  • Journal Title: IEEE Photonics Technology Letters 20(印刷中)
  • Peer Reviewed
• [Journal Article] A straight-line 160 Gbit/s DPSK transmission over 1,000 km with time-domain optical Fourier transformation (2008)
  • Author(s): T. Hirooka, M. Okazaki, and M. Nakazawa
  • Journal Title: IEEE Photonics Technology Letters 20(印刷中)
  • Peer Reviewed
• [Journal Article] Mode-hop-free, optical frequency tunable 40 GHz mode-locked fiber laser (2007)
  • Author(s): M. Yoshida, K. Kasai, and M. Nakazawa
  • Journal Title: IEEE J. Quantum Electron vol. 43, no. 8 Pages: 704-708
  • Peer Reviewed
• [Journal Article] Ultra-stable regeneratively mode-locked laser as an opto-electronic microwave oscillator and its application to optical metrology (2007)
  • Author(s): M. Nakazawa, M. Yoshida, and T. Hirooka
  • Journal Title: IEICE Trans. Electron., Invited paper vol. E90-C, no. 2 Pages: 443-449
  • NAID: 110007519634
  • Peer Reviewed
• [Journal Article] Mode-hop-free, optical frequency tunable 40 GHz mode-locked fiber laser (2007)
  • Author(s): M. Yoshida, K. Kasai, and M. Nakazawa
  • Journal Title: IEEE Journal of Quantum Electronics 43 Pages: 704-708
  • Peer Reviewed
• [Journal Article] モード同期ファイバーレーザーと超高速光通信 (2007)
  • Author(s): 中沢正隆, 廣岡俊彦
  • Journal Title: 光技術コンタクト 45 Pages: 580-587
• [Journal Article] 160 Gb/s-600 km OTDM transmission using time-domain optical Fourier transformation (2006)
  • Author(s): T. Hirooka, K. Hagiuda, T. Kumakura, K. Osawa, and M. Nakazawa
  • Journal Title: IEEE Photon. Technol. Lett vol. 18, no. 24 Pages: 2647-2649
  • Peer Reviewed
• [Journal Article] 超短光パルスを用いた高速光伝送技術の現状と将来展望 (2006)
  • Author(s): 中沢正隆, 廣岡俊彦
  • Journal Title: 電子情報通信学会論文誌(招待論文) vol. J89-B, no. 11 Pages: 2067-2081
  • NAID: 110007379617
  • Peer Reviewed
• [Journal Article] Comparison of 40 GHz optical demultiplexers using SMZ switch and EA modulator in 160 Gbit/s-500 km OTDM transmission (2006)
  • Author(s): T. Hirooka, T. Kumakura, K. Osawa, and M. Nakazawa
  • Journal Title: IEICE Electronics Express vol. 3, no. 17 Pages: 397-403
  • NAID: 130000088343
  • Peer Reviewed
• [Journal Article] Optical adaptive equalization of high-speed signals using time-domain optical Fourier transformation (2006)
  • Author(s): T. Hirooka and M. Nakazawa
  • Journal Title: J. Lightwave Technol vol. 24, no. 7 Pages: 2530-2540
  • Peer Reviewed
• [Journal Article] ABCD matrix formalism of time-domain optical Fourier transformation for distortion-free pulse transmission (2006)
  • Author(s): M. Nakazawa and T. Hirooka
  • Journal Title: IEICE Electron. Express vol. 3, no. 4 Pages: 74-79
  • NAID: 130000088392
  • Peer Reviewed
• [Journal Article] Optical adaptive equalization of high-speed signals using time-domain optical Fourier transformation (2006)
  • Author(s): T.Hirooka, M.Nakazawa
  • Journal Title: Journal of Lightwave Technology 24・7 Pages: 2530-2540
• [Journal Article] Comparison of 40 GHz optical demultiplexers using SMZ switch and EA modulator in 160 Gbit/s-500 km OTDM transmission (2006)
  • Author(s): T.Hirooka, T.Kumakura, K.Osawa, M.Nakazawa
  • Journal Title: IEICE Electronics Express 3・17 Pages: 397-403
  • NAID: 130000088343
• [Journal Article] 超短光パルスを用いた高速光伝送技術の現状と将来展望 (2006)
  • Author(s): 中沢正隆, 廣岡俊彦
  • Journal Title: 電子情報通信学会論文誌 J89-B・11 Pages: 2067-2081
  • NAID: 110007379617
• [Journal Article] 160 Gb/s-600 km OTDM transmission using time-domain optical Fourier transformation (2006)
  • Author(s): T.Hirooka, K.Hagiuda, T.Kumakura, K.Osawa, M.Nakazawa
  • Journal Title: IEEE Photonics Technology Letters 18・24 Pages: 2647-2649
• [Journal Article] Ultra-stable regeneratively mode-locked laser as an opto-electronic microwave oscillator and its application to optical metrology (2006)
  • Author(s): M.Nakazawa, M.Yoshida, T.Hirooka
  • Journal Title: IEICE Transactions on Electronics E90-C・2 Pages: 443-449
  • NAID: 110007519634
• [Journal Article] ABCD matrix formalism of time-domain optical Fourier transformation for distortion-free pulse transmission (2006)
  • Author(s): M.Nakazawa, T.Hirooka
  • Journal Title: IEICE Electronics Express 3・4 Pages: 74-79
  • NAID: 130000088392
• [Journal Article] Optical adaptive equalization of high-speed signals using time-domain optical Fourier transformation (2006)
  • Author(s): T.Hirooka, M.Nakazawa
  • Journal Title: Journal of Lightwave Technology 24・6(掲載予定)
• [Journal Article] Distortion-free optical transmission using time-domain optical Fourier transformation and transform-limited optical pulses (2005)
  • Author(s): M. Nakazawa and T. Hirooka
  • Journal Title: J. Opt. Soc. Am. B vol. 22, no. 9 Pages: 1842-1855
  • Peer Reviewed
• [Journal Article] 時間領域光フーリエ変換を用いた超高速無歪み光パルス伝送 (2005)
  • Author(s): 廣岡俊彦, 中沢正隆, 二見史生, 渡辺茂樹
  • Journal Title: 電子情報通信学会論文誌 vol.J88-B, no. 8 Pages: 1402-1410
  • Peer Reviewed
• [Journal Article] 40-GHz, 100-fs stimulated-Brillouin- scattering-free pulse generation by combining a mode-locked laser diode and a dispersion-decreasing fiber (2005)
  • Author(s): K. Hagiuda, T. Hirooka, M. Nakazawa, S. Arahira, and Y. Ogawa
  • Journal Title: Opt. Lett vol. 30, no. 6 Pages: 670-672
  • Peer Reviewed
• [Journal Article] Stimulated Brillouin scattering in dispersion-decreasing fiber with ultrahigh-speed femtosecond soliton pulse compression (2005)
  • Author(s): T. Hirooka, S. Ono, K. Hagiuda, and M. Nakazawa
  • Journal Title: Opt. Lett vol. 30, no. 4 Pages: 364-366
  • Peer Reviewed
• [Journal Article] 時間領域光フーリエ変換による無歪み光ファイバー伝送 (2005)
  • Author(s): 中沢正隆, 廣岡俊彦
  • Journal Title: 光学 vol. 34, no. 1 Pages: 26-31
  • Peer Reviewed
• [Journal Article] 時間領域光フーリエ変換を用いた超高速無歪み光パルス伝送 (2005)
  • Author(s): 廣岡俊彦, 中沢正隆, 二見史生, 渡辺茂樹
  • Journal Title: 電子情報通信学会論文誌 J88-B・8 Pages: 1402-1410
• [Journal Article] Distortion-free optical transmission using time-domain optical Fourier transformation and transform-limited optical pulses (2005)
  • Author(s): M.Nakazawa, T.Hirooka
  • Journal Title: Journal of the Optical Society of America B 22・9 Pages: 1842-1855
• [Journal Article] 時間領域光フーリエ変換を用いた超短光パルスの無歪み光ファイバー伝送 (2005)
  • Author(s): 中沢正隆, 廣岡俊彦
  • Journal Title: 光学 34・1 Pages: 26-31
  • NAID: 10014339055
• [Journal Article] Stimulated Brillouin scattering in dispersion-decreasing fiber with ultrahigh-speed femtosecond soliton pulse compression (2005)
  • Author(s): T.Hirooka, S.Ono, K.Hagiuda, M.Nakazawa
  • Journal Title: Optics Letters 30・4 Pages: 364-366
• [Journal Article] 40-GHz,100-fs stimulated-Brillouin-scattering-free pulse generation by combining a mode-locked laser diode and a dispersion-decreasing fiber (2005)
  • Author(s): K.Hagiuda, T.Hirooka, M.Nakazawa, S.Arahira, Y.Ogawa
  • Journal Title: Optics Letters 30・6 Pages: 670-672
• [Journal Article] A new adaptive equalization scheme for 160-Gb/s transmitted signals using time-domain optical Fourier transformation (2004)
  • Author(s): T. Hirooka, M. Nakazawa, F. Futami, and S. Watanabe
  • Journal Title: IEEE Photon. Technol. Lett vol. 16, no. 10 Pages: 2371-2373
  • NAID: 120002338620
  • Peer Reviewed
• [Journal Article] A 40 GHz regeneratively and harmonically mode-locked erbium-doped fiber laser and its longitudinal-mode characteristics (2004)
  • Author(s): M. Yoshida, T. Yaguchi, S. Harada, and M. Nakazawa
  • Journal Title: IEICE Trans. Electron vol. E87-C, no. 7 Pages: 1166-1172
  • NAID: 110003214983
  • Peer Reviewed
• [Journal Article] Ideal distortion-free transmission using optical Fourier transformation and Fourier transform-limited optical pulses (2004)
  • Author(s): M. Nakazawa, T. Hirooka, F. Futami, and S. Watanabe
  • Journal Title: IEEE Photon. Technol. Lett vol. 16, no. 4 Pages: 1059-1061
  • NAID: 120002338618
  • Peer Reviewed
• [Journal Article] Ideal distortion-free transmission using optical Fourier transformation and Fourier transform-limited optical pulses (2004)
  • Author(s): M.Nakazawa, T.Hirooka, F.Futami, S.Watanabe
  • Journal Title: IEEE Photonics Technology Letters 16・4 Pages: 1059-1061
  • NAID: 120002338618
• [Journal Article] A 40GHz regeneratively and harmonically mode-locked erbium-doped fiber laser and its longitudinal-mode characteristics (2004)
  • Author(s): M.Yoshida, T.Yaguchi, S.Harada, M.Nakazawa
  • Journal Title: IEICE Transactions on Electronics E87-C・7 Pages: 1166-1172
  • NAID: 110003214983
• [Journal Article] A new adaptive equalization scheme for 160-Gb/s transmitted signals using time-domain optical Fourier transformation (2004)
  • Author(s): T.Hirooka, M.Nakazawa, F.Futami, S.Watanabe
  • Journal Title: IEEE Photonics Technology Letters 15・10 Pages: 2371-2373
  • NAID: 120002338620
• [Presentation] 光周波数および繰り返し周波数を同時安定化した40GHz再生モード同期パルスレーザー (2009)
  • Author(s): 吉田真人, 葛西恵介, 中沢正隆
  • Organizer: 2009年春季第56回応用物理学関係連合講演会
  • Place of Presentation: つくば
  • Year and Date: 2009-04-01
• [Presentation] 超高速半導体SMZスイッチによる全光640 Gbit/s OTDM信号の多重分離 (2009)
  • Author(s): 岡崎勝伝、関鵬宇、平野敏行、廣岡俊彦、中沢正隆、中村滋
  • Organizer: 2009年電子情報通信学会総合大会
  • Place of Presentation: 松山
  • Year and Date: 2009-03-19
• [Presentation] 時間領域光フーリエ変換を利用した160 Gbit/s×8波-525 km WDM伝送 (2009)
  • Author(s): 関鵬宇・岡崎勝伝・平野敏行・廣岡俊彦・中沢正隆
  • Organizer: 2009年電子情報通信学会総合大会
  • Place of Presentation: 松山
  • Year and Date: 2009-03-19
• [Presentation] C_2H2_2Absolutely Optical Frequency-Stabilized and 40 GHz Repetition-Rate-Stabilized, Regeneratively Mode-Locked Picosecond Erbium Fiber Laser at 1.53 μm (2009)
  • Author(s): M. Nakazawa, M. Yoshida, and K. Kasai
  • Organizer: Conference on Lasers and Electro Optics (CLEO 2009)
  • Place of Presentation: Baltimore, USA
• [Presentation] 光周波数および繰り返し周波数を同時安定化した40 GHz 再生モード同期パルスレーザー (2009)
  • Author(s): 吉田真人, 葛西恵介, 中沢正隆
  • Organizer: 2009年春季第56回応用物理学関係連合講演会
  • Place of Presentation: つくば
• [Presentation] 時間領域光フーリエ変換を利用した160 Gbit/s× 8 波-525 km WDM伝送 (2009)
  • Author(s): 関鵬宇, 岡崎勝伝, 平野敏行, 廣岡俊彦, 中沢正隆
  • Organizer: 電子情報通信学会2009年総合大会
  • Place of Presentation: 松山
• [Presentation] 超高速半導体SMZスイッチによる全光640 Gbit/s OTDM信号の多重分離 (2009)
  • Author(s): 岡崎勝伝, 関鵬宇, 平野敏行, 廣岡俊彦, 中沢正隆, 中村滋
  • Organizer: 電子情報通信学会2009年総合大会
  • Place of Presentation: 松山
• [Presentation] New scheme for independently stabilizing the repetition rate and optical frequency of a laser using a regenerative mode-lockina technique (2008)
  • Author(s): M. Nakazawa and M. Yoshida
  • Organizer: OSA Annual Meeting, Laser Science (LS2008)
  • Place of Presentation: Rochester, USA
  • Year and Date: 2008-10-21
• [Presentation] 160 Gbit/s-200 km field transmission experiment using a time-domain optical Fourier transformation technique with a large PMD (2008)
  • Author(s): M. Okazaki, P. Guan, T. Hirooka, M. Nakazawa, and T. Miyazaki
  • Organizer: ECOC 2008
  • Place of Presentation: Brussels, Belgium
  • Year and Date: 2008-09-25
• [Presentation] 320 Gbit/s single-polarization DPSK transmission over 525km using time-domain optical Fourier transformation (2008)
  • Author(s): T. Hirooka, M. Okazaki, P. Guan. and M. Nakazawa
  • Organizer: ECOC 2008
  • Place of Presentation: Brussels, Belgium
  • Year and Date: 2008-09-24
• [Presentation] 時間領域光フーリエ変換法を用いた単一偏波320 Gbit/s-525 km DPSK伝送 (2008)
  • Author(s): 廣岡俊彦, 岡崎勝伝, 関鵬宇, 中沢正隆
  • Organizer: 2008年電子情報通信学会ソサイエティ大会
  • Place of Presentation: 川崎
  • Year and Date: 2008-09-19
• [Presentation] 時間領域光フーリエ変換によりPMDを抑制した160 Gbit/s-200 km現場伝送実験 (2008)
  • Author(s): 岡崎勝伝, 関鵬宇, 廣岡俊彦, 中沢正隆, 宮崎哲弥
  • Organizer: 2008年電子情報通信学会ソサイエティ大会
  • Place of Presentation: 川崎
  • Year and Date: 2008-09-19
• [Presentation] 高調波再生モード同期パルスレーザーにおける繰り返し周波数と光周波数の独立制御 (2008)
  • Author(s): 中沢正隆, 吉田真人
  • Organizer: 2008年秋季応用物理学会第69回学術講演会
  • Place of Presentation: 名古屋
  • Year and Date: 2008-09-03
• [Presentation] 光パラボラパルスとの相互位相変調を用いた40 GHz全光時間領域フーリエ変換 (2008)
  • Author(s): 廣岡俊彦, 中沢正隆
  • Organizer: 2008年電子情報通信学会総合大会
  • Place of Presentation: 北九州
  • Year and Date: 2008-03-20
• [Presentation] All-optical 40 GHz time-domain Fourier transformation using XPM with a dark parabolic pulse (2008)
  • Author(s): T. Hirooka and M. Nakazawa
  • Organizer: OFC 2008
  • Place of Presentation: San Diego, USA
  • Year and Date: 2008-02-28
• [Presentation] 40 GHz bright and dark parabolic pulse generation using a picosecond optical pulse source and a 64-channel AWG (2008)
  • Author(s): T. Hirooka, M. Nakazawa, and K. Okamoto
  • Organizer: OFC 2008
  • Place of Presentation: San Diego, USA
  • Year and Date: 2008-02-26
• [Presentation] New scheme for independently stabilizing the repetition rate and optical frequency of a laser using a regenerative mode-locking technique (2008)
  • Author(s): M. Nakazawa and M. Yoshida
  • Organizer: OSA Annual Meeting, Laser Science (LS2008)
  • Place of Presentation: Rochester, USA
• [Presentation] 160 Gbit/s-200 km field transmission experiment using a time-domain optical Furier trnsformation techniquewith alarge PMD (2008)
  • Author(s): M. Okazaki, P. Guan, T. Hirooka, M. Nakazawa, and T. Miyazaki
  • Organizer: European Conference on Optical Communication (ECOC 2008)
  • Place of Presentation: Brussels, Belgium
• [Presentation] 320 Gbit/s sing-polarization DPSK transmission over 525km using time-domain optical Fourier transformation (2008)
  • Author(s): T. Hirooka, M. Okazaki, P. Guan, and M. Nakazawa
  • Organizer: European Conference on Opticnication (ECOC 2008)
  • Place of Presentation: Brussels, Belgium
• [Presentation] 時間領域光フーリエ変換によりPMDを抑制した160 Gbit/s-200 km現場伝送実験 (2008)
  • Author(s): 岡崎勝伝, 関鵬宇, 廣岡俊彦, 中沢正隆, 宮崎哲弥
  • Organizer: 電子情報通信学会2008年ソサイエティ大会
  • Place of Presentation: 川崎
• [Presentation] 時間領域光フーリエ変換法を用いた単一偏波320 Gbit/s-525 km DPSK伝送 (2008)
  • Author(s): 廣岡俊彦, 岡崎勝伝, 関鵬宇, 中沢正隆
  • Organizer: 電子情報通信学会2008年ソサイエティ大会
  • Place of Presentation: 川崎
• [Presentation] 高調波再生モード同期パルスレーザーにおける繰り返し周波数と光周波数の独立制御 (2008)
  • Author(s): 中沢正隆, 吉田真人
  • Organizer: 応用物理学会2008年秋季第69回学術講演会
  • Place of Presentation: 名古屋
• [Presentation] 光パラボラパルスとの相互位相変調を用いた40 GHz全光時間領域フーリエ変換 (2008)
  • Author(s): 廣岡俊彦, 中沢正隆
  • Organizer: 電子情報通信学会2008年総合大会
  • Place of Presentation: 北九州
• [Presentation] Al-optical 40 Gz tme-domain Fourier transformation using XPM with a dark parabolic pulse (2008)
  • Author(s): T. Hirooka and M. Nakazawa
  • Organizer: Optical Fibr Communication Conferenc(OFC2008)
  • Place of Presentation: San Diego, USA
• [Presentation] 40 GHz bright and dark parabolic pulse generation using a picosecond optical pulse source and a 64-channel AWG (2008)
  • Author(s): T. Hirooka, M. Nakazawa, and K. Okamoto
  • Organizer: Optical Fiber Communication Conference (OFC2008)
  • Place of Presentation: San Diego, USA
• [Presentation] Observation of stimulated Brillouin scattering in ultrahigh-speed in-phase and carrier-suppressed RZ OTDM transmission (2007)
  • Author(s): T. Hirooka, K. Osawa, M. Okazaki, M. Nakazawa, and H. Murai
  • Organizer: ECOC 2007
  • Place of Presentation: Berlin, Germany
  • Year and Date: 2007-09-19
• [Presentation] 160 Gbit/s-900 km DPSK transmission with time-domain optical Fourier transformation (2007)
  • Author(s): T. Hirooka, M. Okazaki, K. Osawa, and M. Nakazawa
  • Organizer: ECOC 2007
  • Place of Presentation: Berlin, Germany
  • Year and Date: 2007-09-17
• [Presentation] 時間領域光フーリエ変換法による160 Gbit/s-1000 km DPSK直線路伝送 (2007)
  • Author(s): 岡崎勝伝, 大澤耕, 廣岡俊彦, 中沢正隆
  • Organizer: 2007年電子情報通信学会ソサイエティ大会
  • Place of Presentation: 鳥取
  • Year and Date: 2007-09-13
• [Presentation] 超高速RZおよびCS-RZ光伝送における誘導ブリルアン散乱の観測 (2007)
  • Author(s): 廣岡俊彦, 大澤耕, 岡崎勝伝, 中沢正隆, 村井仁
  • Organizer: 2007年電子情報通信学会ソサイエティ大会
  • Place of Presentation: 鳥取
  • Year and Date: 2007-09-10
• [Presentation] Terabit OTDM transmission-Key challenges (2007)
  • Author(s): M. Nakazawa and T. Hirooka
  • Organizer: IEEE/LEOS Summer Topicals 2007
  • Place of Presentation: Portland, USA
  • Year and Date: 2007-07-23
• [Presentation] Ultrahigh-speed signal transmission / processing technologies (2007)
  • Author(s): T. Hirooka and M. Nakazawa
  • Organizer: OECC 2007
  • Place of Presentation: 横浜
  • Year and Date: 2007-07-10
• [Presentation] Low power-penalty 160 Gbit/s DPSK transmission over 600 km (2007)
  • Author(s): K. Osawa, M. Okazaki, T. Hirooka, and M. Nakazawa
  • Organizer: OECC 2007
  • Place of Presentation: 横浜
  • Year and Date: 2007-07-10
• [Presentation] Low power-penalty 160 Gbit/s DPSK transmission over 600 km (2007)
  • Author(s): K. Osawa, M. Okazaki, T. Hirooka, and M. Nakazawa
  • Organizer: Optoelectronics and Communions Confence (OECC2007)
  • Place of Presentation: Yokohama, Japn
  • Year and Date: 2007-07-03
• [Presentation] Next generation ultrafast telecommunications technologies (2007)
  • Author(s): M. Nakazawa
  • Organizer: CLEO Europe 2007
  • Place of Presentation: Munich, Germany
  • Year and Date: 2007-06-19
• [Presentation] Advanced optical fiber devicetechnology for ultrahih-speed tansmission (2007)
  • Author(s): M. Nakazawa
  • Organizer: 5th Workshop on Fibers and Optical Passive Components (WFOPC2007)
  • Place of Presentation: Taipei, Taiwan
• [Presentation] Observation of sulated Brillouin scatteg in ultrahigh-spein-phasend carrier-suppressed RZ OTDM transmission (2007)
  • Author(s): T. Hirooka, K. Osawa, M. Okazaki, M. Nakazawa, and H. Murai
  • Organizer: Euron Coence on Optical Communication (ECOC2007)
  • Place of Presentation: Berlin, Germany
• [Presentation] 160 Gbit/s-900 km DPSK transmission with time-domain optical Fourier tranormation (2007)
  • Author(s): T. Hirooka, M. Okazaki, K. Osawa, and M. Nakazawa
  • Organizer: European Conference on Optical Communication (ECOC2007)
  • Place of Presentation: Berlin, Germany
• [Presentation] 時間領域光フーリエ変換法による160 Gbit/s-1000 km DPSK直線路伝送 (2007)
  • Author(s): 岡崎勝伝, 大澤耕, 廣岡俊彦, 中沢正隆
  • Organizer: 電子情報通信学会2007年ソサイエティ大会
  • Place of Presentation: 鳥取
• [Presentation] 超高速RZおよびCS-RZ光伝送における誘導ブリルアン散乱の観測 (2007)
  • Author(s): 廣岡俊彦, 大澤耕, 岡崎勝伝, 中沢正隆, 村井仁
  • Organizer: 電子情報通信学会2007年ソサイエティ大会
  • Place of Presentation: 鳥取
• [Presentation] 160 Gbit/s-900 km straight-line DPSK transmission with time-domain optical Fourier transformation (2007)
  • Author(s): 岡崎勝伝, 大澤耕, 廣岡俊彦, 中沢正隆
  • Organizer: 平成19年度電気関係学会東北支部連合大会
  • Place of Presentation: 弘前
• [Presentation] New frontiers in optical communication : ultrahighnsmission and coherent transmission (2007)
  • Author(s): M. Nakazawa
  • Organizer: The 3rd International Symposium on Ultrafast Photonic Technolgies
  • Place of Presentation: Boston, USA
• [Presentation] Terabit OTDM transmission.Key challenges (2007)
  • Author(s): M. Nakazawa and T. Hirooka
  • Organizer: IEEE/LEOS Summer Topicals 2007
  • Place of Presentation: Long Beach, USA
• [Presentation] Ulrahigh-sped signal transmission / processing technologies (2007)
  • Author(s): T. Hirooka and M. Nakazawa
  • Organizer: Optoeronics and Communications Conference (OECC2007)
  • Place of Presentation: Yokohama, Japan
• [Presentation] Advance optical fiber and fiber device technologies for ultrahigh-speed optical transmision (2007)
  • Author(s): M. Nakazawa
  • Organizer: Optoelectics and Communications Conference (OECC2007)
  • Place of Presentation: Yokohama, Japan
• [Presentation] Next generation ultrafast telecomunications technologies (2007)
  • Author(s): M. Nakazawa
  • Organizer: CLEO Europe 2007
  • Place of Presentation: Munich, Germany
• [Presentation] A mode-hop-free, frequency-tunable 4GHz mode-locked fiber laser (2007)
  • Author(s): M. Yoshida, K. Kasai, and M. Nakazawa
  • Organizer: Optical Fiber Communiation Confence (OFC007)
  • Place of Presentation: Anaheim, USA
• [Presentation] 光周波数掃引が可能な40 GHzピコ秒モード同期ファイバレーザの性能向上 (2007)
  • Author(s): 吉田真人, 葛西恵介, 中沢正隆
  • Organizer: 電子情報通信学会2007年総合大会
  • Place of Presentation: 名古屋
• [Presentation] 160 Gbit/s DPSK伝送方式における時間領域光フーリエ変換の効果 (2007)
  • Author(s): 廣岡俊彦, 大澤耕, 岡崎勝伝, 中沢正隆
  • Organizer: 電子情報通信学会2007年総合大会
  • Place of Presentation: 名古屋
• [Presentation] DPSK方式による低パワーペナルティ160 Gbit/s-600 km伝送 (2007)
  • Author(s): 大澤耕, 廣岡俊彦, 岡崎勝伝, 中沢正隆
  • Organizer: 電子情報通信学会2007年総合大会
  • Place of Presentation: 名古屋
• [Presentation] Comparison of 40 GHz optical demultiplexers using SMZ switch and EA modulator in 160 Gbit/s-500 km OTDM transmission (2006)
  • Author(s): T. Hirooka, T. Kumakura, K. Osawa, and M. Nakazawa
  • Organizer: European Optical Society (EOS) Annual Meeting 2006
  • Place of Presentation: Paris, France
• [Presentation] 160 Gbit/s-600 km OTDM transmission using time-doman optical Fourier transformation (2006)
  • Author(s): T. Hirooka, K. Hagiuda, T. Kumakura, K. Osawa, and M. Nakazawa
  • Organizer: European Conference on Opticnication (ECOC 2006)
  • Place of Presentation: Cannes, France
• [Presentation] 超短パルス光源と64チャネルAWGを用いた40 GHz BrightおよびDarkパラボラ光パルスの発生 (2006)
  • Author(s): 廣岡俊彦, 大澤耕, 中沢正隆, 岡本勝就
  • Organizer: 電子情報通信学会2006年ソサイエティ大会
  • Place of Presentation: 金沢
• [Presentation] 光周波数掃引が可能な40 GHzピコ秒モード同期ファイバレーザ (2006)
  • Author(s): 吉田真人, 葛西恵介, 中沢正隆
  • Organizer: 電子情報通信学会2006年ソサイエティ大会
  • Place of Presentation: 金沢
• [Presentation] 160 Gbit/s OTDM伝送におけるSMZおよびEA型40 GHz光DEMUXデバイスの性能比較 (2006)
  • Author(s): 大澤耕, 熊倉崇, 廣岡俊彦, 中沢正隆
  • Organizer: 電子情報通信学会2006年ソサイエティ大会
  • Place of Presentation: 金沢
• [Presentation] 時間領域光フーリエ変換を用いた160 Gbit/s-524 km OTDM伝送 (2006)
  • Author(s): 萩生田研一, 熊倉崇, 大澤耕, 廣岡敏彦, 中沢正隆
  • Organizer: 電子情報通信学会2006年総合大会
  • Place of Presentation: 東京
• [Presentation] 時間領域光フーリエ変換を用いた超高速無歪み光伝送 (2006)
  • Author(s): 中沢正隆, 廣岡俊彦
  • Organizer: 電子情報通信学会2006年総合大会
  • Place of Presentation: 東京
• [Presentation] Deivation ofnalytical expression for third-order dispersion eliminon using time-domain optical Fourier transformation (2005)
  • Author(s): T. Hirooka and M. Nakazawa
  • Organizer: European Conference on Opticnication (ECOC 2005)
  • Place of Presentation: Glasgow, Scotland
• [Presentation] 時間領域光フーリエ変換法による三次分散歪みの除去に関する解析 (2005)
  • Author(s): 廣岡俊彦, 中沢正隆
  • Organizer: 電子情報通信学会2005年ソサイエティ大会
  • Place of Presentation: 札幌
• [Presentation] 時間領域光フーリエ変換を用いた波形無歪み伝送のABCD行列による表現 (2005)
  • Author(s): 中沢正隆, 廣岡俊彦
  • Organizer: 電子情報通信学会2005年ソサイエティ大会
  • Place of Presentation: 札幌
• [Presentation] Future of ultrigh-speed opal communication (2005)
  • Author(s): M. Nakazawa
  • Organizer: 2nd International Symposium on Ultrafast Photonic Technologies
  • Place of Presentation: St. Andrews, Scotland
• [Presentation] Ulrahigh-sped istotion-free transmission usig all-optical time-domain Fourier transformation (2005)
  • Author(s): T. Hirooka and M. Nakazawa
  • Organizer: International Conference on Quantum Electronics and the Pacific Rim Conference on Lasers and Electro-Optics (IQEC/CLEOR 2005)
  • Place of Presentation: Tokyo, Japan
• [Presentation] GHz帯モード同期ファイバレーザにおける縦モード周波数ホッピングの測定と考察 (2005)
  • Author(s): 原田真治, 葛西恵介, 中沢正隆
  • Organizer: 電子情報通信学会2005年総合大会
  • Place of Presentation: 大阪
• [Presentation] 時間領域光フーリエ変換法による各種波形歪みの除去に関する理論的検討 (2005)
  • Author(s): 中沢正隆, 廣岡俊彦
  • Organizer: 電子情報通信学会2005年総合大会
  • Place of Presentation: 大阪
• [Presentation] 全光時間領域フーリエ変換による超高速無歪みパルス伝送法の提案 (2005)
  • Author(s): 廣岡俊彦, 中沢正隆
  • Organizer: 電子情報通信学会2005年総合大会
  • Place of Presentation: 大阪
• [Presentation] モード同期半導体レーザによる誘導ブリルアン散乱のない100 fs-40 GHzソリトンパルス圧縮 (2004)
  • Author(s): 萩生田研一, 廣岡俊彦, 中沢正隆, 荒平慎、小川洋
  • Organizer: 電子情報通信学会2004年ソサイエティ大会
  • Place of Presentation: 徳島
• [Presentation] 時間領域光フーリエ変換を用いた160 Gbit/s光伝送信号の適応等化 (2004)
  • Author(s): 廣岡俊彦、中沢正隆、二見史生、渡辺茂樹
  • Organizer: 電子情報通信学会2004年ソサイエティ大会
  • Place of Presentation: 徳島
• [Presentation] Generation of a 40-GHz, 100-fs pulse train from a mode-locked laser diode using DDF soliton compression (2004)
  • Author(s): K. Hagiuda, T. Hirooka, S. Ono, M. Yoshida, M. Nakazawa, S. Arahira, and Y. Ogawa
  • Organizer: uropen Coference on Optical Communication (ECOC 2004)
  • Place of Presentation: Stockholm, Sweden
• [Presentation] New adaptive equalizaton scheme for 160 Gb/s transmitted signal using time-domain optical Fourier transformation (2004)
  • Author(s): T. Hirooka, M. Nakazawa, F. Fitami, and S. Watanabe
  • Organizer: European Conference on Optical Communication (ECOC 2004)
  • Place of Presentation: Stockholm, Sweden
• [Presentation] 超高速光パルス列のDDFソリトン圧縮における誘導ブリルアン散乱の入力パワー依存性 (2004)
  • Author(s): 廣岡俊彦、小野晋平、萩生田研一、中沢正隆
  • Organizer: 2004年秋季第65回応用物理学会学術講演会
  • Place of Presentation: 仙台
• [Presentation] Stimulated Brillouin scattering in ultrahigh-speed femtosecond solitocompression with a dispersion- decreasing fiber (2004)
  • Author(s): T. Hirooka, S. Ono, K. Hagiuda, and M. Nakazawa
  • Organizer: International Conference on Ultrafast Phenoa (UP 2004)
  • Place of Presentation: Niigata, Japan
• [Presentation] Optimization of a 40 GHz regeneratively and harmically mode-locked fiberser under PLL operation and its longituinal mode characer- istics (2004)
  • Author(s): M. Yoshida, T. Yaguchi, S. Harada, and M. Nakazawa
  • Organizer: Ultast Phenomena (UP 2004)
  • Place of Presentation: Niigata, Japan
• [Book] Ultrahigh-SpeedOptical Trans- mission Technology (2007)
  • Author(s): H. G. Weber and M. Nakazawa
  • Publisher: Springer
• [Book] Ultrahigh-Speed Optical Transmission Technology (2007)
  • Author(s): H.G. Weber and M. Nakazawa
  • Publisher: Springer-Verlag
• [Book] フェムト秒レーザーの超高速光通信への応用, (分担執筆), (フェムト秒テクノロジー, 平尾一之, 邱 建栄(編)) (2006)
  • Author(s): 中沢正隆
  • Publisher: 東京化学同人
• [Book] 光科学の最前線, (超高速光伝送技術(分担執筆)) (2005)
  • Author(s): 中沢正隆
  • Publisher: JILS
• [Book] Encyclopedic Handbook of Integrated ptics, (Erbium-doped fiber amplifier, K. Iga and Y. Kokubun, Eds) (2005)
  • Author(s): M. Nakazawa
  • Publisher: Marcel Dekker Inc
• [Remarks]
  • URL: http://www.nakazawa.riec.tohoku.ac.jp
• [Remarks] 日本経済新聞2006年9月29日、日刊工業新聞2006年9月18日、河北新報2006年9月4日
• [Remarks] 320 Gbit/s×5波-525km WDM 伝送に関して報道発表予定
• [Remarks]
  • URL: http://www.nakazawa.riec.tohoku.ac.jp
• [Remarks]
  • URL: http://www.nakazawa.riec.tohoku.ac.jp
• [Patent(Industrial Property Rights)] OTDM/WDM伝送方法及び装置 (2009)
  • Inventor(s): 中沢正隆, 廣岡俊彦
  • Industrial Property Rights Holder: 科学技術振興機構
  • Acquisition Date: 2009-01-30
• [Patent(Industrial Property Rights)] OTDMfWDM伝送方法及び装置 (2009)
  • Inventor(s): 中沢正隆, 廣岡俊彦
  • Industrial Property Rights Holder: 科学技術振興機構
  • Filing Date: 2009-01-30
• [Patent(Industrial Property Rights)] Optical pulus compressor and optical function generator, optical pulse compression method and optical function generating method (2008)
  • Inventor(s): M. Nakazawa and T. Hirooka
  • Industrial Property Rights Holder: JST
  • Acquisition Date: 2008-09-23
  • Overseas
• [Patent(Industrial Property Rights)] Optical Fourier transform device and method (2008)
  • Inventor(s): M. Nakazawa and T. Hirooka
  • Industrial Property Rights Holder: JST
  • Acquisition Date: 2008-04-01
  • Overseas
• [Patent(Industrial Property Rights)] Optical Fourier transform device and method (2008)
  • Inventor(s): M. Nakazawa, and T. Hirooka
  • Industrial Property Rights Holder: JST
  • Filing Date: 2008-04-01
  • Overseas
• [Patent(Industrial Property Rights)] Optical pulse compressor and optical function generator, optical pulse compression method and optical function generating method (2008)
  • Inventor(s): M. Nakazawa, and T. Hirooka
  • Industrial Property Rights Holder: JST
  • Filing Date: 2008-09-23
  • Overseas