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GHz mode-locked pulse laser with simultaneously stabilized optical frequency and repetition rate and its applications

Research Project

Project/Area Number 21226002
Research Category

Grant-in-Aid for Scientific Research (S)

Allocation TypeSingle-year Grants
Research Field Applied optics/Quantum optical engineering
Research InstitutionTohoku University

Principal Investigator

NAKAZAWA MASATAKA  東北大学, 電気通信研究所, 教授 (80333889)

Co-Investigator(Kenkyū-buntansha) YOSHIDA Masato  東北大学, 電気通信研究所, 准教授 (10333890)
廣岡 俊彦  東北大学, 電気通信研究所, 准教授 (40344733)
Project Period (FY) 2009-05-11 – 2014-03-31
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥183,950,000 (Direct Cost: ¥141,500,000、Indirect Cost: ¥42,450,000)
Fiscal Year 2013: ¥31,330,000 (Direct Cost: ¥24,100,000、Indirect Cost: ¥7,230,000)
Fiscal Year 2012: ¥44,850,000 (Direct Cost: ¥34,500,000、Indirect Cost: ¥10,350,000)
Fiscal Year 2011: ¥30,810,000 (Direct Cost: ¥23,700,000、Indirect Cost: ¥7,110,000)
Fiscal Year 2010: ¥34,970,000 (Direct Cost: ¥26,900,000、Indirect Cost: ¥8,070,000)
Fiscal Year 2009: ¥41,990,000 (Direct Cost: ¥32,300,000、Indirect Cost: ¥9,690,000)
Keywordsレーザー / 光標準・計測 / コヒーレント伝送 / GHz帯モード同期パルスレーザ / 周波数・時間標準 / OTDM-QAMコヒーレント伝送 / 光計測 / 応用光学・量子光工学 / 光源技術 / 高性能レーザ / 計測工学 / 先端的通信 / モード同期レーザ / ファイバレーザ / 超短パルス / 光マイクロ波発振器 / 光周波数制御 / Cs原子時計 / 光周波数コム / 超短光パルス
Research Abstract

We have demonstrated for the first time a mode-locked pulse laser with simultaneo-usly stabilized optical frequency and repetition rate by using a Cs atomic resonance and an acetylene mol-ecular absorption line, respectively. We also successfully demonstrated a 440 fs short pulse generation byemploying a saturable absorber in the laser cavity for narrowing the pulse width. Furthermore,we applied apulse source based on a frequency stabilized CW laser to coherent optical pulse transmission, and we have successfully demonstrated for the first time a 1.92 Tbit/s single channel transmission with 64 QAM signal.

Assessment Rating
Verification Result (Rating)

A

Report

(7 results)
  • 2014 Research Progress Assessment (Verification Result) ( PDF )
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Annual Research Report
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (68 results)

All 2014 2013 2012 2011 2010 2009 Other

All Journal Article (19 results) (of which Peer Reviewed: 18 results) Presentation (40 results) (of which Invited: 2 results) Book (1 results) Remarks (6 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] A single-channel 1.92 Tbit/s, 64 QAM coherent optical pulse transmission over 150 km using frequency-domain equalization2013

    • Author(s)
      D. O. Otuya, K. Kasai, M. Yoshida, T. Hirooka, and M. Nakazawa
    • Journal Title

      Opt. Express

      Volume: vol.21 Issue: 19 Pages: 22808-22816

    • DOI

      10.1364/oe.21.022808

    • Related Report
      2013 Annual Research Report 2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] A Cesium optical atomic clock with high optical frequency stability2012

    • Author(s)
      K. Tokuhira, F. Suzuki , M. Yoshida and M. Nakazawa
    • Journal Title

      IEICE Electronics Express

      Volume: 9 Issue: 18 Pages: 1496-1503

    • DOI

      10.1587/elex.9.1496

    • NAID

      130001921838

    • ISSN
      1349-2543
    • Related Report
      2013 Final Research Report 2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Single-carrier 800-Gb/s 32 RZ/QAM coherent transmission over 225 km employing a novel RZ-CW conversion technique2012

    • Author(s)
      K.Kasai, O.D.Odeke, M.Yoshida, T.Hirooka, M.Nakazawa
    • Journal Title

      IEEE Photonics Technology Letters

      Volume: 24 Issue: 5 Pages: 416-418

    • DOI

      10.1109/lpt.2011.2180373

    • Related Report
      2013 Final Research Report 2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ultrafast coherent optical transmission2012

    • Author(s)
      M.Nakazawa, T.Hirooka, M.Yoshida, K.Kasai
    • Journal Title

      IEEE Journal of selected topics in quantum electronics

      Volume: 18 Issue: 1 Pages: 363-376

    • DOI

      10.1109/jstqe.2011.2125781

    • Related Report
      2013 Final Research Report 2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Novel RZ-CW conversion scheme for ultra multi-level, high-speed coherent OTDM transmission2011

    • Author(s)
      M.Nakazawa, K.Kasai, M.Yoshida, T.Hirooka
    • Journal Title

      Optics Express

      Volume: 19 Issue: 26 Pages: B574-B574

    • DOI

      10.1364/oe.19.00b574

    • Related Report
      2013 Final Research Report 2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 1.5-μm Frequency-stabilized λ/4-shifted DFB LD employing an external fiber ring cavity with a linewidth of 2.6 kHz and an RIN of -135 dB/Hz2011

    • Author(s)
      K.Kasai, A.Mori, M.Nakazawa
    • Journal Title

      IEEE Photonics Technology Letters

      Volume: 23 Issue: 15 Pages: 1046-1048

    • DOI

      10.1109/lpt.2011.2150211

    • Related Report
      2013 Final Research Report 2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 1.5μm Frequency-stabilized λ/4-shifted DFB LD Employing an External Fiber Ring Cavity with a Linewidth of 2.6 kHz and a RIN of-135 dB/Hz2011

    • Author(s)
      K.Kasai, A.Mori, M.Nakazawa
    • Journal Title

      IEEE Photonics Technology Letters

      Volume: 23(掲載予定)

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ultrafast coherent optical transmission2011

    • Author(s)
      M.Nakazawa, T.Hirooka, M.Yoshida, K.Kasai
    • Journal Title

      IEEE J.Selected Topics in Quantum Electronics

      Volume: 17(掲載予定)

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Optical frequency-tunable Cs atomic clock with a 9.19GHz mode-hop-free fiber laser2010

    • Author(s)
      T. Morisaki, M. Yoshida, and M. Nakazawa
    • Journal Title

      IEICE Electronics Express

      Volume: 7 Issue: 21 Pages: 1652-1658

    • DOI

      10.1587/elex.7.1652

    • NAID

      130000401398

    • ISSN
      1349-2543
    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] レーザーによる情報通信技術の発展2010

    • Author(s)
      中沢正隆
    • Journal Title

      応用物理

      Volume: vol.79

    • NAID

      10026356919

    • URL

      https://www.jsap.or.jp/ap/2010/06/index-e.xml

    • Related Report
      2013 Final Research Report 2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Single-channel 400-Gb/s OTDM-32 RZ/QAM coherent transmission over 225 km using an optical phase-locked loop technique2010

    • Author(s)
      K. Kasai, T. Omiya, P. Guan, M. Yoshida, T. Hirooka, and M. Nakazawa
    • Journal Title

      IEEE Photon. Technol. Lett

      Volume: vol.22 Issue: 8 Pages: 562-564

    • DOI

      10.1109/lpt.2010.2042708

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Recent progress on ultrafast/ultrashort/frequency-stabilized erbium-doped fiber lasers and their applications2010

    • Author(s)
      M. Nakazawa
    • Journal Title

      Frontiers of Optoelectro nics in China

      Volume: vol.3 Issue: 1 Pages: 38-44

    • DOI

      10.1007/s12200-009-0085-x

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Single-channel 400-Gb/s OTDM-32 RZ/QAM coherent transmission over 225km using an optical phase-locked loop technique2010

    • Author(s)
      K.Kasai, T.Omiya, P.Guan, M.Yoshida, T.Hirooka, M.Nakazawa
    • Journal Title

      IEEE Photonics Technology Letters

      Volume: 22 Pages: 562-564

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Optical frequency-tunable Cs atomic clock with a 9.19GHz mode-hop-free fiber laser2010

    • Author(s)
      T.Morisaki, M.Yoshida, M.Nakazawa
    • Journal Title

      IEICE Electronics Express

      Volume: 7 Pages: 1652-1658

    • NAID

      130000401398

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Recent progress on ultrafast/ultrashort/frequency-stabilized erbium-doped fiber lasers and their applications2010

    • Author(s)
      M.Nakazawa
    • Journal Title

      Frontiers of Optoelectronics in China 3

      Pages: 38-44

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Single-channel 400-Gb/s OTDM-32 RZ/QAM coherent transmission over 225km using an optical phase-locked loop technique2010

    • Author(s)
      K.Kasai, T.Omiya, P.Guan, M.Yoshida, T.Hirooka, M.Nakazawa
    • Journal Title

      IEEE Photonics Technology Letters 22(掲載予定)

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] FM-eliminated C_2H_2 frequency- stabilized laser diode with an RIN of -135 dB/Hz and a linewidth of 4 kHz2009

    • Author(s)
      K. Kasai and M. Nakazawa
    • Journal Title

      Opt. Lett

      Volume: vol.34 Issue: 14 Pages: 2225-2227

    • DOI

      10.1364/ol.34.002225

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] FM-eliminated C_2H_2 frequency-stabilized laser diode with an RIN of -135dB/Hz and a linewidth of 4kHz2009

    • Author(s)
      K.Kasai, M.Nakazawa
    • Journal Title

      Optics Letters 34

      Pages: 2225-2227

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article]2009

    • Author(s)
      伊藤弘昌(編)
    • Journal Title

      フォトニクス基礎(朝倉書店)

      Pages: 130-170

    • Related Report
      2009 Annual Research Report
  • [Presentation] 1.92 Tbit/s, 64 QAM coherent Nyquist pulse transmission over 150 km with a spectral efficiency of 7.5 bit/s/Hz2014

    • Author(s)
      D. O. Otuya, K. Kasai, T. Hirooka, M. Yoshida, and M. Nakazawa
    • Organizer
      OFC2014, W1A.4
    • Place of Presentation
      San Francisco, USA
    • Related Report
      2013 Final Research Report
  • [Presentation] 1.92 Tbit/s, 64 QAM coherent Nyquist pulse transmission over 150 km with a spectral efficiency of 7.5 bit/s/Hz2014

    • Author(s)
      D. O. Otuya, K. Kasai, T. Hirooka, M. Yoshida, and M. Nakazawa
    • Organizer
      Optical Fiber Conference 2014
    • Place of Presentation
      San Francisco, USA
    • Related Report
      2013 Annual Research Report
  • [Presentation] 周波数利用効率7.5 bit/s/Hzを有する1.92 Tbit/s, 64 QAMコヒーレント光ナイキストパルス伝送2014

    • Author(s)
      David Otuya, 葛西恵介, 廣岡俊彦, 吉田真人, 中沢正隆
    • Organizer
      電子情報通信学会総合大会
    • Place of Presentation
      新潟大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] 単一チャネル1.92 Tbit/s, 64 QAM-150 kmコヒーレントパルス伝送2013

    • Author(s)
      David Odeke Otuya, 葛西恵介, 廣岡俊彦, 吉田真人, 中沢正隆
    • Organizer
      電子情報通信学会ソサイエティ大会
    • Place of Presentation
      福岡工業大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] Exa-bit optical communication exploring by 3M scheme2013

    • Author(s)
      M. Nakazawa
    • Organizer
      18th Microoptics Conference
    • Place of Presentation
      Tokyo, Japan
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Challenges to Ultrahigh Capacity/ Spectral Efficiency Optical Transmission2013

    • Author(s)
      M. Nakazawa
    • Organizer
      2nd RIEC-RLE Meeting on Research Collaboration in Photonics
    • Place of Presentation
      Sendai, Japan
    • Related Report
      2012 Annual Research Report
  • [Presentation] A single-channel, 1.6 Tbit/s 32 QAM coherent pulse transmission over 150 km with RZ-CW conversion and FDE techniques2013

    • Author(s)
      D. Otuya, K. Kasai, T. Hirooka, M. Yoshida, M. Nakazawa, T. Hara, and S. Oikawa
    • Organizer
      Optical Fiber Communication Conference
    • Place of Presentation
      Anaheim, USA
    • Related Report
      2012 Annual Research Report
  • [Presentation] A single-channel 1.92 Tbit/s, 64 QAM coherent pulse OTDM transmission over 150 km2013

    • Author(s)
      D. Otuya, K. Kasai, T. Hirooka, M. Yoshida, M. Nakazawa
    • Organizer
      18th OptoElectronics and Communications Conference
    • Place of Presentation
      Kyoto, Japan
    • Related Report
      2012 Annual Research Report
  • [Presentation] RZ-CW変換法を用いた単一チャネル800 Gbit/sコヒーレント32RZ/QAM伝送2012

    • Author(s)
      葛西恵介, D.O.Otuya, 吉田真人, 廣岡俊彦, 中沢正隆
    • Organizer
      電子情報通信学会2012年総合大会
    • Place of Presentation
      岡山
    • Year and Date
      2012-03-21
    • Related Report
      2011 Annual Research Report
  • [Presentation] 導波路リング共振器型半導体レーザーのC_2H_2絶対周波数安定化2012

    • Author(s)
      葛西恵介, 中沢正隆, 山崎裕幸
    • Organizer
      第59回応用物理学会関係連合講演会
    • Place of Presentation
      東京
    • Year and Date
      2012-03-15
    • Related Report
      2011 Annual Research Report
  • [Presentation] Challenges to ultrafast and high-spectral density optical communications systems2012

    • Author(s)
      M.Nakazawa
    • Organizer
      CERIES-GCOE11
    • Place of Presentation
      仙台
    • Year and Date
      2012-02-22
    • Related Report
      2011 Annual Research Report
  • [Presentation] 光周波数安定化Cs光原子時計の性能改善2012

    • Author(s)
      得平和成, 鈴木文崇, 吉田真人, 中沢正隆
    • Organizer
      電子情報通信学会LQE研究会
    • Place of Presentation
      仙台
    • Related Report
      2012 Annual Research Report
  • [Presentation] 1.6 Tbit/s, single-carrier 32 RZ/QAM coherent transmission over 150 km utilizing RZ-CW conversion scheme2012

    • Author(s)
      D. Otuya, K. Kasai, T. Hirooka, M. Yoshida, M. Nakazawa
    • Organizer
      電気関係学会東北支部大会
    • Place of Presentation
      秋田
    • Related Report
      2012 Annual Research Report
  • [Presentation] 光周波数安定化Cs光原子時計の性能改善2012

    • Author(s)
      得平和成, 鈴木文崇, 吉田真人, 中沢正隆
    • Organizer
      第73回応用物理学会学術講演会
    • Place of Presentation
      愛媛
    • Related Report
      2012 Annual Research Report
  • [Presentation] Absolute frequency stabilization of a laser diode based on triple ring resonators to an C_2H_2 absorption line2011

    • Author(s)
      K.Kasai, M.Nakazawa, H.Yamazaki
    • Organizer
      17 th MicroOptics Conference
    • Place of Presentation
      仙台
    • Year and Date
      2011-11-01
    • Related Report
      2011 Annual Research Report
  • [Presentation] Absolutely optical-frequency-stabilized cesium optical atomic clock2011

    • Author(s)
      M.Yoshida, F.Suzuki, T.Morisaki, M.Nakazawa
    • Organizer
      17 th MicroOptics Conference
    • Place of Presentation
      仙台
    • Year and Date
      2011-10-31
    • Related Report
      2011 Annual Research Report
  • [Presentation] Novel RZ-CW conversion scheme for ultra multi-level, high-speed coherent OTDM transmission2011

    • Author(s)
      M.Nakazawa, K.Kasai, M.Yoshida, T.Hirooka
    • Organizer
      ECOC 2011
    • Place of Presentation
      Geneva, Switzerland
    • Year and Date
      2011-09-21
    • Related Report
      2011 Annual Research Report
  • [Presentation] 絶対光周波数安定化Cs光原子時計2011

    • Author(s)
      鈴木文崇, 森崎貴仁, 吉田真人, 中沢正隆
    • Organizer
      第72回応用物理学会学術講演会
    • Place of Presentation
      山形
    • Year and Date
      2011-08-30
    • Related Report
      2011 Annual Research Report
  • [Presentation] A ^<13>C_2H_2 frequency-stabilized λ/4-shifted DFB laser diode with an external fiber ring cavity having a linewidth of 2.6 kHz and a RIN of -135 dB/Hz2011

    • Author(s)
      K.Kasai, A.Mori, M.Nakazawa
    • Organizer
      CLEO 2011
    • Place of Presentation
      Baltimore, USA
    • Year and Date
      2011-05-01
    • Related Report
      2011 Annual Research Report
  • [Presentation] 波長1.5μm帯ファイバーリング外部共振器型λ/4シフトDFB LDの絶対周波数安定化2011

    • Author(s)
      葛西恵介, 森杏, 中沢正隆
    • Organizer
      第58回応用物理学会連合講演会
    • Place of Presentation
      神奈川
    • Year and Date
      2011-03-16
    • Related Report
      2010 Annual Research Report
  • [Presentation] 狭線幅周波数安定化レーザーを用いた超多値QAMコヒーレント光伝送技術2011

    • Author(s)
      葛西恵介
    • Organizer
      レーザー学会学術講演会第31回年次大会
    • Place of Presentation
      東京
    • Year and Date
      2011-01-09
    • Related Report
      2010 Annual Research Report
  • [Presentation] Cs光原子時計の光周波数連続掃引2010

    • Author(s)
      森崎貴仁, 吉田真人, 中沢正隆
    • Organizer
      第71回応用物理学会学術講演会
    • Place of Presentation
      長崎
    • Year and Date
      2010-09-16
    • Related Report
      2010 Annual Research Report
  • [Presentation] A C_2H_2 frequency-stabilized laser diode with a linewidth of 4 kHz and its application to an optical phase-locked loop2010

    • Author(s)
      K.Kasai, M.Nakazawa
    • Organizer
      CLEO 2010
    • Place of Presentation
      San Jose, USA
    • Year and Date
      2010-05-17
    • Related Report
      2010 Annual Research Report
  • [Presentation] Optical frequency-tunable Cs atomic clock with a mode-hop-free fiber laser2010

    • Author(s)
      T.Morisaki, M.Yoshida, M.Nakazawa
    • Organizer
      CLEO 2010
    • Place of Presentation
      San Jose, USA
    • Year and Date
      2010-05-16
    • Related Report
      2010 Annual Research Report
  • [Presentation] Device requirements for next generation optical transmission technology2010

    • Author(s)
      M.Nakazawa
    • Organizer
      ECIO 2010
    • Place of Presentation
      Cambridge, UK
    • Year and Date
      2010-04-09
    • Related Report
      2010 Annual Research Report
  • [Presentation] Single-Channel 400Gbit/s, OTDM-32 RZ/QAM Coherent Tran smission over 225km Using an Optical Phase-Locked Loop Technique2010

    • Author(s)
      葛西恵介, 大宮達則, 関鵬宇, 吉田真人, 廣岡俊彦, 中沢正隆
    • Organizer
      OFC 2010
    • Place of Presentation
      San Diego, USA
    • Year and Date
      2010-03-25
    • Related Report
      2009 Annual Research Report
  • [Presentation] 光コムを用いたコヒーレントOTDM伝送用光PLL回路2010

    • Author(s)
      吉田真人, 葛西恵介, 大宮達則, 関鵬宇, 廣岡俊彦, 中沢正隆
    • Organizer
      電子情報通信学会2010年総合大会
    • Place of Presentation
      仙台
    • Year and Date
      2010-03-19
    • Related Report
      2009 Annual Research Report
  • [Presentation] 単一チャネル400Gbit/s-225km OTDM-32 RZ/QAMコヒーレント伝送2010

    • Author(s)
      葛西恵介, 大宮達則, 関鵬宇, 吉田真人, 廣岡俊彦, 中沢正隆
    • Organizer
      電子情報通信学会2010年総合大会
    • Place of Presentation
      仙台
    • Year and Date
      2010-03-19
    • Related Report
      2009 Annual Research Report
  • [Presentation] 超多値コヒーレント伝送用各種周波数安定化レーザとその光位相同期技術2010

    • Author(s)
      葛西恵介, 中沢正隆
    • Organizer
      電子情報通信学会2010年総合大会
    • Place of Presentation
      仙台
    • Year and Date
      2010-03-19
    • Related Report
      2009 Annual Research Report
  • [Presentation] 波長1.5μm帯無変調出力型C_2H_2(アセチレン)周波数安定化半導体レーザーの発振特性2009

    • Author(s)
      葛西恵介, 中沢正隆
    • Organizer
      2009年秋季第70回応用物理学会学術講演会
    • Place of Presentation
      富山
    • Year and Date
      2009-09-11
    • Related Report
      2009 Annual Research Report
  • [Presentation] モードホップフリーファイバレーザを用いたCs光原子時計2009

    • Author(s)
      森崎貴仁, 吉田真人, 中沢正隆
    • Organizer
      2009年秋季第70回応用物理学会学術講演会
    • Place of Presentation
      富山
    • Year and Date
      2009-09-10
    • Related Report
      2009 Annual Research Report
  • [Presentation] 波長1.5μm帯無変調出力型^<13>C_2H_2(アセチレン)周波数安定化半導体レーザの発振特性2009

    • Author(s)
      葛西恵介, 中沢正隆
    • Organizer
      電子情報通信学会レーザ・量子エレクトロニクス研究会
    • Place of Presentation
      仙台
    • Year and Date
      2009-08-24
    • Related Report
      2009 Annual Research Report
  • [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2009

    • Author(s)
      吉田真人, 葛西恵介, 中沢正隆
    • Organizer
      電子情報通信学会レーザ・量子エレクトロニクス研究会
    • Place of Presentation
      仙台
    • Year and Date
      2009-08-24
    • Related Report
      2009 Annual Research Report
  • [Presentation] モードホップフリーファイバレーザを用いたCs光原子時計2009

    • Author(s)
      森崎貴仁, 吉田真人, 中沢正隆
    • Organizer
      電子情報通信学会レーザ・量子エレクトロニクス研究会
    • Place of Presentation
      仙台
    • Year and Date
      2009-08-24
    • Related Report
      2009 Annual Research Report
  • [Presentation] Recent progress on ultrafast/ultrashort/frequency-stabilized erbium-doped fiber lasers and their applications2009

    • Author(s)
      中沢正隆
    • Organizer
      ICMAT 2009
    • Place of Presentation
      Singapore, Singapore
    • Year and Date
      2009-06-29
    • Related Report
      2009 Annual Research Report
  • [Presentation] Delivery of an Ultrastable Cs Optical Atomic Clock Using a JGN II Optical Test Bed2009

    • Author(s)
      M.Yoshida, I.Kashiwamura, T.Hirooka, M.Nakazawa
    • Organizer
      CLEO 2009
    • Place of Presentation
      Baltimore, USA
    • Year and Date
      2009-06-02
    • Related Report
      2009 Annual Research Report
  • [Presentation] C_2H_2 Absolutely Optical Frequency-Stabilized and 40GHz Repetition-Rate-Stabilized, Regeneratively Mode-Locked Picosecond Erbium Fiber Laser at 1.53μm2009

    • Author(s)
      中沢正隆, 吉田真人, 葛西恵介
    • Organizer
      CLEO 2009
    • Place of Presentation
      Baltimore, USA
    • Year and Date
      2009-06-01
    • Related Report
      2009 Annual Research Report
  • [Presentation] Ultramulti-level QAM and Nyquist pulse Transmission

    • Author(s)
      M. Nakazawa and T. Hirooka
    • Organizer
      Post-ECOC Workshop 2013
    • Place of Presentation
      Southampton, UK
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] 単一チャネル1.92 Tbit/s, 64 QAM-150 kmコヒーレントパルス伝送

    • Author(s)
      David Odeke Otuya, 葛西恵介, 廣岡俊彦, 吉田真人, 中沢正隆
    • Organizer
      通研共同プロジェクト研究会
    • Place of Presentation
      東北大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] RZ-CW変換法を用いたコヒーレント32 RZ/QAM伝送

    • Author(s)
      葛西恵介, David Odeke Otuya, 吉田真人, 廣岡俊彦, 中沢正隆
    • Organizer
      電子情報通信学会OCS研究会
    • Place of Presentation
      静岡
    • Related Report
      2012 Annual Research Report
  • [Book] High Spectral Density Optical Communication Technologies2010

    • Author(s)
      M.Nakazawa, K.Kikuchi, T.Miyazaki
    • Publisher
      Springer
    • Related Report
      2010 Annual Research Report
  • [Remarks] 東北大学電気通信研究所中沢研究室HP

    • URL

      http://www.nakazawa.riec.tohoku.ac.jp/

    • Related Report
      2013 Final Research Report
  • [Remarks] 東北大学電気通信研究所中沢研究室ホームページ

    • URL

      http://www.nakazawa.riec.tohoku.ac.jp/

    • Related Report
      2013 Annual Research Report
  • [Remarks] 東北大学電気通信研究所中沢研究室ホームページ

    • URL

      http://www.nakazawa.riec.tohoku.ac.jp/

    • Related Report
      2012 Annual Research Report
  • [Remarks]

    • URL

      http://www.nakazawa.riec.tohoku.ac.jp

    • Related Report
      2011 Annual Research Report
  • [Remarks]

    • URL

      http://www.nakazawa.riec.tohoku.ac.jp

    • Related Report
      2010 Annual Research Report
  • [Remarks]

    • URL

      http://www.nakazawa.riec.tohoku.ac.jp

    • Related Report
      2009 Annual Research Report
  • [Patent(Industrial Property Rights)] コヒーレント光時分割多重信号の復調方式2010

    • Inventor(s)
      中沢正隆, 葛西恵介, 廣岡俊彦, 吉田真人
    • Industrial Property Rights Holder
      中沢正隆, 葛西恵介, 廣岡俊彦, 吉田真人
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2010-247011
    • Filing Date
      2010-11-04
    • Related Report
      2013 Final Research Report 2010 Annual Research Report
  • [Patent(Industrial Property Rights)] コヒーレント光時分割多重伝送方式2010

    • Inventor(s)
      中沢正隆, 葛西恵介, 廣岡俊彦, 吉田真人
    • Industrial Property Rights Holder
      中沢正隆, 葛西恵介, 廣岡俊彦, 吉田真人
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2010-176273
    • Filing Date
      2010-08-05
    • Related Report
      2013 Final Research Report 2010 Annual Research Report

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Published: 2009-04-01   Modified: 2019-07-29  

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