High-speed and low power consumption VCSEL photonics

• Project/Area Number: 15H02248
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Electron device/Electronic equipment
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: Koyama Fumio 東京工業大学, 科学技術創成研究院, 教授 (30178397)
• Co-Investigator(Kenkyū-buntansha): 坂口 孝浩 東京工業大学, 科学技術創成研究院, 助教 (70215622)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥43,550,000 (Direct Cost: ¥33,500,000、Indirect Cost: ¥10,050,000); Fiscal Year 2017: ¥15,470,000 (Direct Cost: ¥11,900,000、Indirect Cost: ¥3,570,000); Fiscal Year 2016: ¥16,380,000 (Direct Cost: ¥12,600,000、Indirect Cost: ¥3,780,000); Fiscal Year 2015: ¥11,700,000 (Direct Cost: ¥9,000,000、Indirect Cost: ¥2,700,000)
• Keywords: 面発光レーザ / 光インターコネクト / データセンタ / 半導体レーザ / 直接変調 / 外部変調器 / 高速変調 / データセンター

Outline of Final Research Achievements

We proposed and demonstrated high speed VCSEL photonics using a coupled cavity structure functioning like optical equalization. The small signal analysis based on rate equations was carried out to be over 100GHz by increasing the number of cavities. A 850 nm-band transverse coupled-cavity VCSEL has shown a 3dB bandwidth over 29 GHz, and a single-mode VCSELs exhibits a 30 GHz bandwidth after resonance tuning and large signal modulation up to 48GHz. Energy power consumption can be below 100 fJ/bit. We achieved the lowest power consumption of below 70fJ/bit. We also demonstrated output over 1mW for modulator integrated devices.

Research Products

• [Int'l Joint Research] King Abdulaziz University(Saudi Arabia)
• [Journal Article] High-speed wavelength switching of tunable MEMS vertical cavity surface emitting laser by ringing suppression (2018)
  • Author(s): Inoue Shunya、Nishimura Shun、Nakahama Masanori、Matsutani Akihiro、Sakaguchi Takahiro、Koyama Fumio
  • Journal Title: Japanese Journal of Applied Physics Volume: 57 Issue: 4 Pages: 040308-040308
  • DOI: 10.7567/jjap.57.040308
  • NAID: 210000148802
  • Peer Reviewed
• [Journal Article] Enhancing the modulation bandwidth of VCSELs to the millimeter-waveband using strong transverse slow-light feedback (2015)
  • Author(s): Moustafa Ahmed, Ahmed Bakry, Mohamed S. Alghamdi, Hamed Dalir, Fumio Koyama
  • Journal Title: Optics Express Volume: 23 Issue: 12 Pages: 15365-15371
  • DOI: 10.1364/oe.23.015365
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] 850nm transverse-coupled-cavity vertical-cavity surface-emitting laser with direct modulation bandwidth of over 30GHz (2015)
  • Author(s): Xiaodong Gu, Masanori Nakahama, Akihiro Matsutani, Moustafa Ahmed, Ahmed Bakry, Fumio Koyama
  • Journal Title: Applied Physics Express Volume: 8 Issue: 8 Pages: 082702-082702
  • DOI: 10.7567/apex.8.082702
  • NAID: 210000137613
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] 面発光レーザーの最近の進展－高速変調と機能集積－ (2015)
  • Author(s): 小山二三夫
  • Journal Title: レーザー研究 Volume: 43 Pages: 425-429
  • NAID: 130007957130
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Low chirp and high-speed operation of transverse coupled cavity VCSEL (2015)
  • Author(s): 9.Shanting Hu, Moustafa Ahmed, Ahmed Bakry, Fumio Koyama
  • Journal Title: Japanese Journal of Applied Physics Volume: 54 Issue: 9 Pages: 090304-090304
  • DOI: 10.7567/jjap.54.090304
  • NAID: 210000145642
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Sub-gigahertz beam switching of vertical-cavity surface-emitting laser with transverse coupled cavity (2015)
  • Author(s): 10.Masanori Nakahama, Xiaodong Gu, Takahiro Sakaguchi, Akihiro Matsutani, Moustafa Ahmed, Ahmed Bakry, Fumio Koyama
  • Journal Title: Applied Physics Letters Volume: 107 Issue: 7
  • DOI: 10.1063/1.4929147
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Presentation] Modulation Response of an Electro-absorption Modulator Integrated with Transverse Coupled Cavity VCSELs (2018)
  • Author(s): Shanting Hu, Fumio Koyama
  • Organizer: 第65回 応用物理学会 春季学術講演会
• [Presentation] Physics and applications of VCSEL photonics (2017)
  • Author(s): Fumio Koyama
  • Organizer: International Conference on Physics Materials Sciences and Engineering
  • Place of Presentation: Luxor
  • Year and Date: 2017-03-23
  • Invited
• [Presentation] Numerical analysis of high output slow light VCSEL amplifier (2017)
  • Author(s): Ahmed Mohamed Ahmed Hassan,Moustafa Ahmed,Masanori Nakahama,Fumio Koyama
  • Organizer: 第64回応用物理学会春季学術講演会
  • Place of Presentation: 神奈川
  • Year and Date: 2017-03-15
• [Presentation] Enhancing the modulation bandwidth of double transverse coupled cavity VCSELs (2017)
  • Author(s): Hameeda Ibrahim,Moustafa Ahmed,Fumio Koyama
  • Organizer: 第64回応用物理学会春季学術講演会
  • Place of Presentation: 神奈川
  • Year and Date: 2017-03-15
• [Presentation] Electro-absorption Modulator Integrated with Transverse Coupled Cavity VCSELs (2017)
  • Author(s): Shanting Hu,Xiaodong Gu,Fumio Koyama
  • Organizer: 第64回応用物理学会春季学術講演会
  • Place of Presentation: 神奈川
  • Year and Date: 2017-03-15
• [Presentation] Advances in surface emitting lasers (2017)
  • Author(s): Fumio Koyama
  • Organizer: Third WRHI workshop on Asian Industry Highway
  • Int'l Joint Research / Invited
• [Presentation] Large Signal Modultion Analysis Of High-speed Transverse Coupled Cavity VCSELs (2017)
  • Author(s): Hameeda Ibrahim, Fumio Koyama, Moustafa Ahmed
  • Organizer: The 12th Conference on Lasers and Electro-Optics Pacific Rim
  • Int'l Joint Research
• [Presentation] Sub-volt Wavelength Sweep Operation Of MEMS VCSEL Employing High-Q Mechanical Resonanc (2017)
  • Author(s): Masanori Nakahama, Shunya Inoue, Shun Nishimura, Akihiro Matsutani, Takahiro Sakaguchi, Fumio Koyama
  • Organizer: The 12th Conference on Lasers and Electro-Optics Pacific Rim
  • Int'l Joint Research
• [Presentation] Unidirectional Coupling Of Laterally Coupled VCSEL And Slow Light Modulator/Amplifier (2017)
  • Author(s): Shanting Hu, Akihiro Matsutani, Fumio Koyama
  • Organizer: The 12th Conference on Lasers and Electro-Optics Pacific Rim
  • Int'l Joint Research
• [Presentation] Emerging trends and challenges in high-speed and short-reach optical communications and interconnects (2017)
  • Author(s): Fumio Koyama
  • Organizer: Huawei Strategy & Technology Workshop
  • Int'l Joint Research / Invited
• [Presentation] VCSELs Laterally Coupled with a Slow Light Modulator/Amplifier Showing Unidirectional Coupling (2017)
  • Author(s): Shanting Hu, Akihiro Matsutani and Fumio Koyama
  • Organizer: International Nano-Optoelectronics Workshop 2017
  • Int'l Joint Research
• [Presentation] Large Signal Modulation Analysis of High-speed Double Transverse Coupled Cavity VCSELs (2017)
  • Author(s): Hameeda Ibrahim, Fumio Koyama, Moustafa Ahmed
  • Organizer: The 24th General Congress of the International Commission for Optics
  • Int'l Joint Research
• [Presentation] Numerical analysis of Watt-class VCSEL amplifier (2017)
  • Author(s): Ahmed Hassan , Moustafa Ahmed, Masanori Nakahama, F.umio Koyama
  • Organizer: The 24th General Congress of the International Commission for Optics
  • Int'l Joint Research
• [Presentation] High Speed VCSEL (2017)
  • Author(s): Fumio Koyama
  • Organizer: Key Optical Communication Technologies Workshop
  • Int'l Joint Research / Invited
• [Presentation] Electro-absorption Modulator Integrated with Transverse Coupled Cavity VCSELs (2017)
  • Author(s): Shanting Hu, Xiaodong Gu, Akihiro Matsutani, Fumio Koyama
  • Organizer: The 24th General Congress of the International Commission for Optics
  • Int'l Joint Research
• [Presentation] 電圧波形制御によるMEMS VCSELのリンギング抑制 (2017)
  • Author(s): 井上俊也、西村駿、中濱正統、松谷晃宏、坂口孝浩、小山二三夫
  • Organizer: 第78回応用物理学会秋季学術講演会
• [Presentation] 面発光レーザ集積フォトニクスの最新動向と応用 (2017)
  • Author(s): 小山二三夫
  • Organizer: 光技術動向セミナー
  • Invited
• [Presentation] 光通信用850 nm帯面発光レーザの低消費電力化と高速化 (2017)
  • Author(s): 近藤崇,櫻井淳,城岸直樹,白井優司,早川純一朗,村上朱実,村田道昭,顧暁冬,小山二三夫
  • Organizer: 2017年電子情報通信学会ソサイエティ大会
  • Invited
• [Presentation] New Function and Integration of VCSEL Photonics (2017)
  • Author(s): Fumio Koyama
  • Organizer: レーザ・量子エレクトロニクス研究会
  • Invited
• [Presentation] 面発光レーザフォトニクスの進展 -高速変調と機能集積- (2016)
  • Author(s): 小山二三夫
  • Organizer: 第7回 超高速フォトニクスシンポジウム
  • Place of Presentation: 小金井市
  • Year and Date: 2016-12-07
• [Presentation] Modulation Bandwidth Enhancement of Double Transverse Coupled Cavity VCSELs (2016)
  • Author(s): Hameeda Ibrahim,Ahmed Mohamed Ahmed Hassan,Fumio Koyama
  • Organizer: 21st MICROOPTICS CONFERENCE,MOC2016
  • Place of Presentation: Berkeley
  • Year and Date: 2016-10-13
  • Int'l Joint Research
• [Presentation] VCSEL Photonics for Optical Interconnects (2016)
  • Author(s): Fumio Koyama
  • Organizer: 21st MICROOPTICS CONFERENCE,MOC2016
  • Place of Presentation: Berkeley
  • Year and Date: 2016-10-12
  • Int'l Joint Research / Invited
• [Presentation] Temperature Characteristics of Photo Detector Integrated Transverse-Coupled-Cavity VCSELs (2016)
  • Author(s): Naoki Jogan,Junichiro Hayakawa,Takashi Kondo,Akemi Murakami,Jun Sakurai,Xiaodong Gu,Fumio Koyama
  • Organizer: 25th International Semiconductor Laser Conference
  • Place of Presentation: Kobe
  • Year and Date: 2016-09-14
  • Int'l Joint Research
• [Presentation] 面発光レーザと集積したブラッグ反射鏡導波路増幅器の高シングルモード出力動作 (2016)
  • Author(s): 顧暁冬,許在旭,中濵正統,松谷晃宏,小山二三夫
  • Organizer: 第77回応用物理学会秋季学術講演会
  • Place of Presentation: 新潟
  • Year and Date: 2016-09-14
• [Presentation] Temperature Dependence of Small Signal Response of 850 nm Transverse-Coupled- Cavity VCSELs (2016)
  • Author(s): Takashi Kondo,Junichiro Hayakawa,Naoki Jogan,Akemi Murakami,Jun Sakurai,Xiaodong Gu,Fumio Koyama
  • Organizer: 25th International Semiconductor Laser Conference
  • Place of Presentation: Kobe
  • Year and Date: 2016-09-13
  • Int'l Joint Research
• [Presentation] High speed modulation of transverse coupled cavity VCSELs (2016)
  • Author(s): Fumio Koyama
  • Organizer: 21st. Optoelectronics and Communications Conference
  • Place of Presentation: Niigata
  • Year and Date: 2016-07-04
  • Int'l Joint Research / Invited
• [Presentation] VCSEL-Integrated Bragg Reflector Waveguide Amplifier with Single-mode Output Power over 10 mW (2016)
  • Author(s): Xiaodong Gu,Masanori Nakahama,Akihiro Matsutani,Fumio Koyama
  • Organizer: 21st. Optoelectronics and Communications Conference
  • Place of Presentation: Niigata
  • Year and Date: 2016-07-04
  • Int'l Joint Research
• [Presentation] High speed modulation of transverse coupled cavity VCSELs (2016)
  • Author(s): Fumio Koyama
  • Organizer: OECC/PS 2016
  • Place of Presentation: Niigata
  • Year and Date: 2016-07-04
  • Int'l Joint Research / Invited
• [Presentation] Low chirp operation of transverse-coupled-cavity VCSELs (2016)
  • Author(s): Shanting Hu,Xiaodong Gu,Fumio Koyama
  • Organizer: Conference on Lasers and Electro-Optics 2016
  • Place of Presentation: San Jose
  • Year and Date: 2016-06-10
  • Int'l Joint Research
• [Presentation] Lateral integration of VCSEL and electro-absorption modulator/beam scanner (2016)
  • Author(s): Fumio Koyama
  • Organizer: SPIE Photonics Europe
  • Place of Presentation: Brusseles
  • Year and Date: 2016-04-04
  • Int'l Joint Research / Invited
• [Presentation] Beam steering and vortex beam creation in VCSEL photonics (2016)
  • Author(s): Fumio Koyama
  • Organizer: SPIE. Photonics West 2016
  • Place of Presentation: San Francisco
  • Year and Date: 2016-02-17
  • Int'l Joint Research / Invited
• [Presentation] Coupled mode analysis of High-speed Transverse Coupled Cavity VCSEL (2015)
  • Author(s): Shanting Hu and Fumio Koyama
  • Organizer: Microoptics Conference 2015
  • Place of Presentation: Fukuoka
  • Year and Date: 2015-10-27
  • Int'l Joint Research
• [Presentation] Beam Engineering in VCSEL Photonics (2015)
  • Author(s): Fumio Koyama
  • Organizer: International Nano-Optoelectronics Workshop 2015
  • Place of Presentation: Tokyo
  • Year and Date: 2015-08-06
  • Int'l Joint Research / Invited
• [Presentation] Chirp Reduction and Modulation Bandwidth Enhancement of Transverse Coupled Cavity VCSEL (2015)
  • Author(s): Shanting Hu and Fumio Koyama
  • Organizer: The 20th Opto Electronics and Communications Conference
  • Place of Presentation: Shanghai
  • Year and Date: 2015-07-01
  • Int'l Joint Research
• [Presentation] Millimeter-wave Modulation of 850 nm VCSELs for Radio over Fiber Applications (2015)
  • Author(s): Hamed Dalir and Fumio Koyama
  • Organizer: CLEO 2015
  • Place of Presentation: San Jose
  • Year and Date: 2015-05-15
  • Int'l Joint Research
• [Presentation] High-speed Directly Modulated Laterally-coupled Twin Stripe Lasers for Optical Interconnects (2015)
  • Author(s): Hiroki Taniguchi, Hamed Dalir and Fumio Koyama
  • Organizer: CLEO 2015
  • Place of Presentation: San Jose
  • Year and Date: 2015-05-13
  • Int'l Joint Research
• [Presentation] Application of Strong Slow-Light Feedback to Boost the Modulation Bandwidth of VCSELs Beyond 70 GHz (2015)
  • Author(s): Moustafa Ahmed, Ahmed Bakry, Hamed Dalir and Fumio Koyama
  • Organizer: CLEO 2015
  • Place of Presentation: San Jose
  • Year and Date: 2015-05-11
  • Int'l Joint Research
• [Patent(Industrial Property Rights)] 面発光レーザ (2017)
  • Inventor(s): 小山二三夫 中濱正統 顧 暁冬
  • Industrial Property Rights Holder: 小山二三夫 中濱正統 顧 暁冬
  • Industrial Property Rights Type: 特許
  • Filing Date: 2017-02-24
  • Overseas