Kasai Keisuke 葛西恵介

… Alternative Names

KASAI KEISUKE 葛西恵介

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Researcher Number	80534495
Other IDs
Affiliation (Current)	2025: 東北大学, 電気通信研究所, 准教授
Affiliation (based on the past Project Information) *help	2021 – 2024: 東北大学, 電気通信研究所, 准教授 2014 – 2015: 東北大学, 電気通信研究所, 助教
Review Section/Research Field	Principal Investigator Optical engineering, Photon science / Communication/Network engineering Except Principal Investigator Basic Section 21020:Communication and network engineering-related / Transformative Research Areas, Section (II) / Medium-sized Section 21:Electrical and electronic engineering and related fields / Engineering / Science and Engineering
Keywords	Principal Investigator コヒーレント光通信 / ファブリペロー共振器 / ファブリーペロー共振器 / 周波数安定化 / レーザー / 音響光学変調器 / 光PLL / 信号処理 Except Principal Investigator 光パルス / デジタルコヒーレント光伝送 … More / 超高速光通信 / リザバーコンピューティング / 海底地殻変動観測 / 海底地震観測 / ファイバセンシング / 重力 / スロー地震 / 物理暗号 / 時間領域変調 / 多値変調 / デジタルコヒーレントQAM伝送 / 光秘匿通信 / ディジタルコヒーレント / QAM / 超短光パルス / パルス整形 / 光時分割多重 / 周波数利用効率 / デジタルコヒーレント / ナイキストパルス / 高速光伝送 Less

High-capacity complex reservoir computing based on ultrahigh-speed coherent optical pulse transmission technology
- Principal Investigator
  
  廣岡俊彦
- Project Period (FY)
  2024 – 2027
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 21020:Communication and network engineering-related
- Research Institution
  Tohoku University
振幅・位相および時間情報を用いた３次元光秘匿通信技術の研究開発
- Principal Investigator
  
  吉田真人
- Project Period (FY)
  2021 – 2024
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Review Section
  
  Medium-sized Section 21:Electrical and electronic engineering and related fields
- Research Institution
  Tohoku University
Development of multi-scale observation techniques for monitoring slow-to-fast earthquakes
- Principal Investigator
  
  田中愛幸
- Project Period (FY)
  2021 – 2025
- Research Category
  
  Grant-in-Aid for Transformative Research Areas (A)
- Review Section
  
  Transformative Research Areas, Section (II)
- Research Institution
  The University of Tokyo
Study on precise optical phase control technique by employing a wideband optical voltage controlled oscillator for coherent optical communicationPrincipal Investigator
- Principal Investigator
  
  KASAI KEISUKE
- Project Period (FY)
  2014 – 2015
- Research Category
  
  Grant-in-Aid for Challenging Exploratory Research
- Research Field
  
  Communication/Network engineering
- Research Institution
  Tohoku University
Study on a narrow linewidth frequency-stabilized laser for coherent optical communicationPrincipal Investigator
- Principal Investigator
  
  KASAI KEISUKE
- Project Period (FY)
  2014 – 2015
- Research Category
  
  Grant-in-Aid for Young Scientists (A)
- Research Field
  
  Optical engineering, Photon science
- Research Institution
  Tohoku University
多機能なコヒーレントナイキストパルスの提案とそれを用いた超高速・高効率光伝送技術
- Principal Investigator
  
  中沢正隆
- Project Period (FY)
  2014 – 2018
- Research Category
  
  Grant-in-Aid for Specially Promoted Research
- Review Section
  
  Science and Engineering
  Engineering
- Research Institution
  Tohoku University

All 2023 2022 2018 2017 2016 2015 2014 Other

All Journal Article Presentation Patent

[Journal Article] Demodulation Performance Comparison of High-Speed Coherent Nyquist Pulse Signal with Analog and Digital Demultiplexing Schemes2023
- Author(s)
  Masato Yoshida, Kosuke Kimura, Toshihiko Hirooka, Keisuke Kasai, and Masataka Nakazawa
- Journal Title
  
  IEICE Trans. Commun.
  
  Volume: E106.B Issue: 11 Pages: 1059-1064
- DOI
  10.1587/transcom.2022OBP0001
- ISSN
  0916-8516, 1745-1345
- Year and Date
  2023-11-01
- Language
  English
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21H04547
[Journal Article] Demodulation performance comparison of high-speed coherent Nyquist pulse signal with analog and digital demultiplexing schemes2023
- Author(s)
  Masato Yoshida, Kosuke Kimura, Toshihiko Hirooka, Keisuke Kasai, and Masataka Nakazawa
- Journal Title
  
  IEICE Transactions on Communications
  
  Volume: E106-B
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21H04547
[Journal Article] Experimental and Numerical Analysis of Ultrahigh-Speed Coherent Nyquist Pulse Transmission with Low-Nonlinearity Dispersion Compensator2022
- Author(s)
  Kosuke Kimura, Masato Yoshida, Keisuke Kasai, Toshihiko Hirooka and Masataka Nakazawa
- Journal Title
  
  IEICE Trans. Commun.
  
  Volume: E105.B Issue: 9 Pages: 1014-1022
- DOI
  10.1587/transcom.2021EBP3178
- ISSN
  0916-8516, 1745-1345
- Year and Date
  2022-09-01
- Language
  English
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20J13062, KAKENHI-PROJECT-21H04547
[Journal Article] Single-channel 7.68 Tbit/s, 64 QAM coherent Nyquist pulse transmission over 150 km with a spectral efficiency of 9.7 bit/s/Hz2018
- Author(s)
  K. Kimura, J. Nitta, M. Yoshida, K. Kasai, T. Hirooka, and M. Nakazawa
- Journal Title
  
  Optics Express
  
  Volume: 26 Issue: 13 Pages: 17418-17428
- DOI
  10.1364/oe.26.017418
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-26000009
[Journal Article] 42.3 Tbit/s, 18 Gbaud 64 QAM WDM coherent transmission over 160 km in the C-band using an injection-locked homodyne receiver with a spectral efficiency of 9 bit/s/Hz2017
- Author(s)
  T. Kan, K. Kasai, M. Yoshida, and M. Nakazawa
- Journal Title
  
  Optics Express
  
  Volume: 25 Pages: 22726-22737
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-26000009
[Journal Article] Single-Channel 3.84 Tbit/s, 64 QAM Coherent Nyquist Pulse Transmission over 150 km with a Spectral Efficiency of 10.6 Bit/s/Hz2017
- Author(s)
  J. Nitta, M. Yoshida, K. Kimura, K. Kasai, T. Hirooka, and M. Nakazawa
- Journal Title
  
  Optics Express
  
  Volume: 25 Issue: 13 Pages: 15199-15207
- DOI
  10.1364/oe.25.015199
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-26000009
[Journal Article] Single-channel 1.92 Tbit/s, 64 QAM coherent Nyquist orthogonal TDM transmission with a spectral efficiency of 10.6 bit/s/Hz2016
- Author(s)
  D. O. Otuya, K. Kasai, T. Hirooka, and M. Nakazawa
- Journal Title
  
  Journal of Lightwave Technology
  
  Volume: 34 Issue: 2 Pages: 768-775
- DOI
  10.1109/jlt.2015.2468580
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-26000009
[Journal Article] 狭線幅レーザーとOPLL(Optical Phase-Locked Loop)及び光注入同期を用いた超多値ディジタルコヒーレント伝送2016
- Author(s)
  葛西恵介, 中沢正隆
- Journal Title
  
  レーザー学会誌　レーザー研究
  
  Volume: vol. 44 Pages: 106-110
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26706016
[Journal Article] 295 mW output, frequency-stabilized erbium silica fiber laser with a linewidth of 5 kHz and a RIN of -120 dB/Hz2016
- Author(s)
  Keisuke Kasai, Masato Yoshida, and Masataka Nakazawa
- Journal Title
  
  Optical Society of America, Optics Express
  
  Volume: vol. 24 Issue: 3 Pages: 2737-2748
- DOI
  10.1364/oe.24.002737
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-26706016
[Journal Article] 1.55 μm hydrogen cyanide optical frequency-stabilized and 10 GHz repetition-rate-stabilized mode-locked fiber laser2016
- Author(s)
  M. Yoshida, K. Yoshida, K. Kasai, and M. Nakazawa
- Journal Title
  
  Optics Express
  
  Volume: 24 Issue: 21 Pages: 24287-24296
- DOI
  10.1364/oe.24.024287
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-26000009
[Journal Article] High-performance TDM demultiplexing of coherent Nyquist pulses using time-domain orthogonality2014
- Author(s)
  K. Harako, D.O. Otuya, K. Kasai, T. Hirooka, and M. Nakazawa
- Journal Title
  
  Optics Express
  
  Volume: 22 Issue: 24 Pages: 29456-29464
- DOI
  10.1364/oe.22.029456
- NAID
  110009959507
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26000009
[Journal Article] Single-channel 1.92 Tbit/s, Pol-Mux-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, M. Yoshida, T. Hirooka, and M. Nakazawa
- Journal Title
  
  Optics Express
  
  Volume: 22 Issue: 20 Pages: 23776-23785
- DOI
  10.1364/oe.22.023776
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26000009
[Patent] 光伝送方法および光伝送装置2017
- Inventor(s)
  中沢正隆, 廣岡俊彦, 吉田真人, 葛西恵介
- Industrial Property Rights Holder
  東北大学
- Filing Date
  2017-10-23
- Overseas
- Data Source
  KAKENHI-PROJECT-26000009
[Patent] OTDM多重分離方法およびOTDM多重分離装置2016
- Inventor(s)
  中沢正隆、廣岡俊彦、吉田真人、葛西恵介
- Industrial Property Rights Holder
  東北大学
- Industrial Property Rights Type
  特許
- Filing Date
  2016-06-18
- Acquisition Date
  2017-03-17
- Data Source
  KAKENHI-PROJECT-26000009
[Patent] 光伝送方法および光伝送装置2016
- Inventor(s)
  中沢正隆、廣岡俊彦、吉田真人、葛西恵介
- Industrial Property Rights Holder
  東北大学
- Industrial Property Rights Type
  特許
- Industrial Property Number
  2016-229408
- Filing Date
  2016-11-25
- Data Source
  KAKENHI-PROJECT-26000009
[Patent] 光時分割多重信号の多重分離方法および装置2014
- Inventor(s)
  中沢正隆、廣岡俊彦、吉田真人、葛西恵介
- Industrial Property Rights Holder
  国立大学法人東北大学
- Industrial Property Number
  2014-125008
- Filing Date
  2014-06-18
- Data Source
  KAKENHI-PROJECT-26000009
[Presentation] アナログおよびデジタルDEMUX方式による160 Gbaudコヒーレント光ナイキストパルス信号の復調特性の比較2022
- Author(s)
  吉田真人、木村光佑、葛西恵介、廣岡俊彦、中沢正隆
- Organizer
  2022年電子情報通信学会ソサイエティ大会
- Data Source
  KAKENHI-PROJECT-21H04547
[Presentation] 小型絶対重力計TAG-1を用いた低温野外環境における連続重力観測2022
- Author(s)
  新谷昌人, 岡大輔, 風間卓仁, 西島潤, 服部晃久, 福田洋一, 奥野淳一, 青山雄一, 土井浩一郎, 葛西恵介, 坪川恒也
- Organizer
  日本測地学会第138回講演会
- Int'l Joint Research
- Data Source
  KAKENHI-PLANNED-21H05204
[Presentation] Demodulation Performance Comparison of 160 Gbaud Coherent Nyquist Pulse Signal with Analog and Digital DEMUX Schemes2022
- Author(s)
  Masato Yoshida, Kosuke Kimura, Keisuke Kasai, Toshihiko Hirooka, and Masataka Nakazawa
- Organizer
  27th OptoElectronics and Communications Conference (OECC 2022)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21H04547
[Presentation] Single-Channel 7.68 Tbit/s, 64 QAM Coherent Nyquist Pulse Transmission over 150 km with a Spectral Efficiency of 9.7 bit/s/Hz2018
- Author(s)
  K. Kimura, J. Nitta, M. Yoshida, K. Kasai, T. Hirooka, and M. Nakazawa
- Organizer
  Opto-Electronics and Communications Conference (OECC) 2018
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26000009
[Presentation] 9.7 bit/s/Hzの周波数利用効率を有する単一チャネル7.68 Tbit/s-150 km, 64 QAMコヒーレントナイキストパルス伝送2018
- Author(s)
  木村光佑・新田純平・吉田真人・葛西恵介・廣岡俊彦・中沢正隆
- Organizer
  電子情報通信学会光ファイバ応用技術研究会
- Data Source
  KAKENHI-PROJECT-26000009
[Presentation] 単一チャンネル7.68 Tbit/s-150 km, 64 QAMコヒーレントナイキストパルス伝送2018
- Author(s)
  新田純平・木村光佑・吉田真人・葛西恵介・廣岡俊彦・中沢正隆
- Organizer
  電子情報通信学会2018年総合大会
- Data Source
  KAKENHI-PROJECT-26000009
[Presentation] Subpicosecond Coherent Nyquist Pulse Generation for 1-Tbaud Transmission Using a C_2H_2 Frequency-Stabilized CW Laser and a 40 GHz Optical Comb Generator2017
- Author(s)
  D. Suzuki, K. Kasai, T. Hirooka, and M. Nakazawa
- Organizer
  Conference on Lasers and Electro Optics (CLEO 2017)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26000009
[Presentation] A New Optical Phase-Locked System Between Ultrashort Pulses for 640 Gbaud Nyquist OTDM Coherent QAM Transmission2017
- Author(s)
  K. Kimura, J. Nitta, M. Yoshida, K. Kasai, T. Hirooka, and M. Nakazawa
- Organizer
  European Conference on Optical Communication (ECOC 2017)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26000009
[Presentation] 単一チャネル3.84 Tbit/s, 64 QAMコヒーレントナイキストパルス信号の150 km伝送2017
- Author(s)
  新田純平・木村光佑・吉田真人・葛西恵介・廣岡俊彦・中沢正隆
- Organizer
  電子情報通信学会2017年ソサイエティ大会
- Data Source
  KAKENHI-PROJECT-26000009
[Presentation] A 295 mW output, HCN frequency-stabilized CW erbium silica fiber laser with a linewidth of 5 kHz and a RIN of -120 dB/Hz2016
- Author(s)
  Keisuke Kasai, Masato Yoshida, and Masataka Nakazawa
- Organizer
  Optical Fiber Communication Conference (OFC)
- Place of Presentation
  Anaheim, CA, USA
- Year and Date
  2016-03-20
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26706016
[Presentation] 10 Tbit/s/chに向けた超高速光ナイキストパルス伝送2016
- Author(s)
  廣岡俊彦、吉田真人、葛西恵介、中沢正隆
- Organizer
  第7回超高速フォトニクスシンポジウム
- Place of Presentation
  NICT(東京都小金井市)
- Year and Date
  2016-12-07
- Invited
- Data Source
  KAKENHI-PROJECT-26000009
[Presentation] A 0.95 ps, 10 GHz, 60 mW HCN frequency-stabilized and mode-locked fiber laser at 1.55 μm2016
- Author(s)
  M. Yoshida, K. Yoshida, K. Kasai, and M. Nakazawa
- Organizer
  Conference on Lasers and Electro Optics (CLEO 2016)
- Place of Presentation
  San Jose, USA
- Year and Date
  2016-06-06
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26000009
[Presentation] 295 mW出力, HCN周波数安定化CWエルビウムファイバリングレーザ2016
- Author(s)
  葛西恵介, 吉田真人, 中沢正隆
- Organizer
  電子情報通信学会総合大会
- Place of Presentation
  九州大学 (福岡県福岡市)
- Year and Date
  2016-03-15
- Data Source
  KAKENHI-PROJECT-26706016
[Presentation] HCN frequency-stabilized 10 GHz mode-locked fiber laser2015
- Author(s)
  K. Yoshida, K. Kasai, M. Yoshida, and M. Nakazawa
- Organizer
  International Symposium on Ultrafast Photonics Technologies and Extremely Advanced Transmission (ISUPT/EXAT 2015)
- Place of Presentation
  コープイン京都(京都府京都市)
- Year and Date
  2015-07-13
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26000009
[Presentation] Single-channel 1.92 Tbit/s, 64 QAM coherent orthogonal TDM transmission of 160 Gbaud optical Nyquist pulses with 10.6 bit/s/Hz spectral efficiency2015
- Author(s)
  D.O. Otuya, K. Harako, K. Kasai, T. Hirooka, and M. Nakazawa
- Organizer
  Optical Fiber Communication Conference (OFC 2015)
- Place of Presentation
  Los Angeles, USA
- Year and Date
  2015-03-23
- Data Source
  KAKENHI-PROJECT-26000009
[Presentation] High-Speed, High Spectrally Efficient 64 QAM Orthogonal TDM Coherent Nyquist Pulse Transmission2015
- Author(s)
  K. Kasai, D. O. Otuya, K. Harako, T. Hirooka and M. Nakazawa
- Organizer
  IEEE Summer Topicals 2015
- Place of Presentation
  Nassau, Bahamas
- Year and Date
  2015-07-13
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26000009
[Presentation] 10 GHz, 0.95 ps coherent optical pulse source based on 1.55 μm HCN frequency-stabilized mode-locked fiber laser2015
- Author(s)
  吉田一貴, 葛西恵介, 吉田真人, 中沢正隆
- Organizer
  平成27年度電気関係学会東北支部連合大会
- Place of Presentation
  岩手県立大学(岩手県滝沢市)
- Year and Date
  2015-08-27
- Data Source
  KAKENHI-PROJECT-26000009
[Presentation] 光ナイキストパルスの発生と超高速・高効率伝送への応用2015
- Author(s)
  廣岡俊彦, 吉田真人, 葛西恵介, 中沢正隆
- Organizer
  電子情報通信学会第2回超高速光エレクトロニクス研究会
- Place of Presentation
  東京農工大学(東京都小金井市)
- Year and Date
  2015-11-25
- Invited
- Data Source
  KAKENHI-PROJECT-26000009
[Presentation] 周波数利用効率10.6bit/s/Hzを有する1.92 Tbit/s/ch、64QAMコヒーレント直交時分割多重伝送2015
- Author(s)
  オツヤダビドオデケ・原子広大・葛西恵介・廣岡俊彦・中沢正隆
- Organizer
  電子情報通信学会光通信システム研究会
- Place of Presentation
  東京工業大学(東京都目黒区)
- Year and Date
  2015-07-30
- Data Source
  KAKENHI-PROJECT-26000009
[Presentation] 周波数利用効率10.6bit/s/Hzを有する1.92 Tbit/s/ch、64 QAMコヒーレントナイキストパルス伝送2015
- Author(s)
  David Odeke Otuya, 原子広大, 葛西恵介, 廣岡俊彦, 中沢正隆
- Organizer
  電子情報通信学会2015年総合大会
- Place of Presentation
  立命館大学(滋賀県草津市)
- Year and Date
  2015-03-10
- Data Source
  KAKENHI-PROJECT-26000009
[Presentation] コヒーレント光ナイキストパルスを用いた直交時分割多重信号の超高速多重分離2014
- Author(s)
  原子広大, David Odeke Otuya, 葛西恵介, 廣岡俊彦, 中沢正隆
- Organizer
  電子情報通信学会光通信システム研究会
- Place of Presentation
  長崎歴史文化博物館(長崎県長崎市)
- Year and Date
  2014-10-30
- Data Source
  KAKENHI-PROJECT-26000009
[Presentation] Novel TDM demultiplexing of 80 Gbaud, 64 QAM coherent Nyquist pulses using time-domain orthogonality2014
- Author(s)
  原子広大, David Odeke Otuya, 葛西恵介, 廣岡俊彦, 中沢正隆
- Organizer
  平成26年度電気関係学会東北支部連合大会
- Place of Presentation
  山形大学(山形県米沢市)
- Year and Date
  2014-08-21
- Data Source
  KAKENHI-PROJECT-26000009
[Presentation] Novel ultrafast TDM demultiplexing scheme using orthogonality in coherent Nyquist pulses2014
- Author(s)
  K. Harako, D.O. Otuya, K. Kasai, T. Hirooka, and M. Nakazawa
- Organizer
  European Conference on Optical Communication (ECOC2014)
- Place of Presentation
  Cannes, France
- Year and Date
  2014-09-23
- Data Source
  KAKENHI-PROJECT-26000009
[Presentation] A single-channel 960 Gbit/s 64 QAM orthogonal TDM transmission with aspectral efficiency of 10.0 bit/s/Hz using coherent Nyquist pulses2014
- Author(s)
  D.O. Otuya, K. Harako, K. Kasai, T. Hirooka, and M. Nakazawa
- Organizer
  European Conference on Optical Communication(ECOC2014)
- Place of Presentation
  Cannes, France
- Year and Date
  2014-09-24
- Data Source
  KAKENHI-PROJECT-26000009
[Presentation] A 160 mW Output, 5 kHz Linewidth Frequency-Stabilized Erbium Silica Fiber Laser with a Short Cavity Configuration
- Author(s)
  Keisuke Kasai, Akira Fujisaki, Masato Yoshida, Toshihiko Hirooka, Masataka Nakazawa, and Shin Masuda
- Organizer
  Conference on Lasers and Electro-Optics (CLEO)
- Place of Presentation
  San Jose, USA
- Year and Date
  2014-06-08 – 2014-06-13
- Data Source
  KAKENHI-PROJECT-26706016

1. 吉田真人 (10333890)

# of Collaborated Projects: 4 results

# of Collaborated Products: 18 results
2. 廣岡俊彦 (40344733)

# of Collaborated Projects: 3 results

# of Collaborated Products: 24 results
3. 中沢正隆 (80333889)

# of Collaborated Projects: 1 results

# of Collaborated Products: 46 results
4. 田中愛幸 (90508350)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
5. 新谷昌人 (30272503)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
6. 横田裕輔 (30840540)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
7. 大久保慎人 (50462940)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
8. 塩原肇 (60211950)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
9. 荒木英一郎 (60359130)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
10. 青木陽介 (90376624)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
11. 板場智史 (90589285)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results

Kasai Keisuke 葛西 恵介

KASAI KEISUKE 葛西 恵介

Research Projects

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High-capacity complex reservoir computing based on ultrahigh-speed coherent optical pulse transmission technology

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振幅・位相および時間情報を用いた３次元光秘匿通信技術の研究開発

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Development of multi-scale observation techniques for monitoring slow-to-fast earthquakes

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Study on precise optical phase control technique by employing a wideband optical voltage controlled oscillator for coherent optical communicationPrincipal Investigator

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Study on a narrow linewidth frequency-stabilized laser for coherent optical communicationPrincipal Investigator

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多機能なコヒーレントナイキストパルスの提案とそれを用いた超高速・高効率光伝送技術

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[Journal Article] Demodulation Performance Comparison of High-Speed Coherent Nyquist Pulse Signal with Analog and Digital Demultiplexing Schemes2023

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[Journal Article] Demodulation performance comparison of high-speed coherent Nyquist pulse signal with analog and digital demultiplexing schemes2023

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[Journal Article] Experimental and Numerical Analysis of Ultrahigh-Speed Coherent Nyquist Pulse Transmission with Low-Nonlinearity Dispersion Compensator2022

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[Journal Article] Single-channel 7.68 Tbit/s, 64 QAM coherent Nyquist pulse transmission over 150 km with a spectral efficiency of 9.7 bit/s/Hz2018

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[Journal Article] 42.3 Tbit/s, 18 Gbaud 64 QAM WDM coherent transmission over 160 km in the C-band using an injection-locked homodyne receiver with a spectral efficiency of 9 bit/s/Hz2017

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[Journal Article] Single-Channel 3.84 Tbit/s, 64 QAM Coherent Nyquist Pulse Transmission over 150 km with a Spectral Efficiency of 10.6 Bit/s/Hz2017

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[Journal Article] Single-channel 1.92 Tbit/s, 64 QAM coherent Nyquist orthogonal TDM transmission with a spectral efficiency of 10.6 bit/s/Hz2016

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Kasai Keisuke 葛西恵介

KASAI KEISUKE 葛西恵介

[Presentation] 小型絶対重力計TAG-1を用いた低温野外環境における連続重力観測2022