Ultra-low voltage drive of high speed optical polymer modulators

• Project/Area Number: 24246063
• 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: Kochi University of Technology
• Principal Investigator: Enami Yasufumi 高知工科大学, 工学部, 教授 (90377474)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥46,800,000 (Direct Cost: ¥36,000,000、Indirect Cost: ¥10,800,000); Fiscal Year 2014: ¥12,350,000 (Direct Cost: ¥9,500,000、Indirect Cost: ¥2,850,000); Fiscal Year 2013: ¥12,350,000 (Direct Cost: ¥9,500,000、Indirect Cost: ¥2,850,000); Fiscal Year 2012: ¥22,100,000 (Direct Cost: ¥17,000,000、Indirect Cost: ¥5,100,000)
• Keywords: 光変調器、 / 電気光学ポリマ / 低電圧駆動 / 光デバイス・光回路 / 光変調器 / スロット光導波路 / ゾルゲルシリカ / メソポーラスゾルゲルシリカ / 半波長電圧 / 広帯域光変調 / ポーリング効率 / 光導波閉じ込め効率 / ポリマ光変調器 / スロット導波路 / ゾルゲルシリカ導波路 / 酸化チタン導波路

Outline of Final Research Achievements

I demonstrated my own proposed novel electro-optic (EO) polymer/TiO2 vertical slot waveguide modulators. I reduced the thickness of the EO polymer down to 0.3 micron and obtained the waveguiding and simultaneously reduced the electrode distance. I successfully obtained optical modulation from the vertical slot waveguide at the first time. I increased mode confinement in the thin EO polymer and poling efficiency using low-index and mesoporous sol-gel silica layer as an interfacial layer in the slot waveguide modulators. I also increased the electrical conductivity of the sol-gel silica cladding to increase the poling efficiency. As a result, I obtained comparably low half wave voltage and electrode length produce (VpiL) of 2.0 Vcm even though EO coefficient is lower (78 pm/V) than that of previously demonstrated high performance EO polymers. These demonstrated polymer modulates enables low power consumption in future optical interconnection

Research Products

• [Int'l Joint Research] University of Washington/University of Arizona(米国)
• [Journal Article] “Covalent immobilization of the anti-human H1N1/HA1 antibody onto a sol-gel surface and optical waveguide sensor for influenza virus detection”, (2016)
  • Author(s): H. Sakamoto, Y. Minpou, T. Kawai, Y. Enami, and S. Suye
  • Journal Title: Applied Biochemistry and Biotechnology Volume: 78 Issue: 4 Pages: 687-694
  • DOI: 10.1007/s12010-015-1902-x
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] “Analysis of efficiently poled electro-optic polymer/TiO2 vertical slot waveguide modulators” (2016)
  • Author(s): Y. Enami*, H. Nakamura, J. Luo, and A. K-Y. Jen
  • Journal Title: Elsevier, Optics Communications Volume: 362 Pages: 77-80
  • DOI: 10.1016/j.optcom.2015.08.048
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] “Sol gel materials enabled electro optic polymer modulators”, (2015)
  • Author(s): Roland Himmelhuber, Robert Norwood, Yasufumi Enami and Nasser Peyghambarian
  • Journal Title: MDPI, Sensors Volume: 15 Issue: 8 Pages: 18239-18255
  • DOI: 10.3390/s150818239
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] “Mesoporous sol-gel silica cladding for hybrid TiO2/electro-optic polymer waveguide modulators,” (2014)
  • Author(s): Y. Enami, Y. Kayaba, J. Luo, and A. K-Y. Jen,
  • Journal Title: Optical Society of America, Optics Express Volume: 22 Issue: 13 Pages: 16418-16423
  • DOI: 10.1364/oe.22.016418
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] “Unprecedented highest electro-optic coefficient of 226 pm/V for electro-optic polymer/TiO2 multilayer slot waveguide modulators”, (2014)
  • Author(s): Y. Jouane, Y-C. Chang, D. Zhnag, J. Luo, A. K-Y. Jen, and Y. Enami
  • Journal Title: Optical Society of America, Optics Express Volume: 22 Issue: 22 Pages: 27725-27732
  • DOI: 10.1364/oe.22.027725
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] “Enhanced conductivity of sol-gel silica cladding for efficient poling in electro-optics polymer/TiO2 vertical slot waveguide modulators,” (2014)
  • Author(s): Y. Enami, Y. Jouane, J. Luo, and A. K-Y. Jen
  • Journal Title: Optical Society of America, Optics Express Volume: 22 Issue: 24 Pages: 30191-30199
  • DOI: 10.1364/oe.22.030191
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Electro-optic polymer/TiO2 multilayer slot waveguide modulators (2012)
  • Author(s): Y. Enami
  • Journal Title: Applied Physics Letters Volume: 101 Issue: 12 Pages: 123509-123509
  • DOI: 10.1063/1.4754597
  • Peer Reviewed
• [Presentation] “Recent progress in electro-optic polymer/TiO2 slot waveguide modulators” (2016)
  • Author(s): Y. Enami,
  • Organizer: BIT’s 6th Annual World Congress of Nano Science & Technology-2016 (Nano S&T-2016)
  • Place of Presentation: Singapore
  • Year and Date: 2016-10-26
  • Int'l Joint Research / Invited
• [Presentation] “High Speed Electro-Optic Polymer/TiO2 Vertical Slot Waveguide Modulators” (2016)
  • Author(s): Yasufumi Enami, Jingdong, Luo , and Alex K-Y. Jen
  • Organizer: 2016 Collaborative Conference on 3D and Materials Research (CC3DMR)
  • Place of Presentation: Seoul Korea
  • Year and Date: 2016-06-20
  • Int'l Joint Research / Invited
• [Presentation] “Highly poled electro-optic polymer modulator based on TiO2 slot layer and sol-gel silica cladding”(招聘講演) (2016)
  • Author(s): Y. Enami
  • Organizer: EMN meeting on titanium oxides
  • Place of Presentation: , Hawaii, USA
  • Year and Date: 2016-03-27
  • Int'l Joint Research / Invited
• [Presentation] "Electro-optic polymer/TiO2 slot waveguide modulators and enhanced electro-optic coefficient of 260 pm/V", (2015)
  • Author(s): Y. Enami, Y. Jouane, J. Luo, and Alex K-Y Jen
  • Organizer: Solid State Devices and Materials (SSDM) 2016,
  • Place of Presentation: Sapporo, Japan, 27-30 Sep, 2015
  • Year and Date: 2015-09-27
  • Int'l Joint Research
• [Presentation] “Electro-optic polymer/TiO2 vertical slot waveguide modulators, (2015)
  • Author(s): Y. Enami, Y. Jouane, J. Luo, and Alex K-Y. Jen,
  • Organizer: Conference on Lasers and Electro-Optics (CLEO) Pacific Rim 2015
  • Place of Presentation: Busa, Korea
  • Year and Date: 2015-08-24
  • Int'l Joint Research
• [Presentation] “Electro-optic polymer/TiO2 vertical slot waveguide modulators (2015)
  • Author(s): Y. Enami, Y. Jouane, J. Luo, and A. K-Y. Jen
  • Organizer: 2015 Collaborative Conference on 3D and Materials Research (CC3DMR)
  • Place of Presentation: Busan, Korea
  • Year and Date: 2015-06-15
  • Int'l Joint Research / Invited
• [Presentation] “Electro-optic polymer/TiO2 multilayer slot waveguide modulators for low voltage operations,” (2015)
  • Author(s): Y. Enami
  • Organizer: 4th Annual World Congress of Advanced Materials-2015 (WCAM-2015)
  • Place of Presentation: Chongqing, China
  • Year and Date: 2015-05-27
  • Int'l Joint Research / Invited
• [Presentation] “Electro-optic polymer/TiO2 slot waveguide modulators" (2015)
  • Author(s): Y. Enami, Y. Jouane, J. Luo, and Alex K-Y. Jen
  • Organizer: Conference on Lasers and Electro-Optics (CLEO)2015, Optoelectronics Technical Group
  • Place of Presentation: San Jose, CA, 10-15 May, 2015.
  • Year and Date: 2015-05-10
  • Int'l Joint Research
• [Presentation] “Electro-optic polymer/TiO2 vertical slot waveguide modulators for optical interconnections.” (2015)
  • Author(s): Y. Enami, J. Luo, and A. Jen,
  • Organizer: World Congress of Emerging Information Technology (InfoTech-2015)
  • Place of Presentation: Shenzhen, China,
  • Year and Date: 2015-04-18
  • Int'l Joint Research / Invited
• [Presentation] “Hybrid electro-optic polymer/TiO2 multilayer slot waveguide modulators for lower half wave voltage and electrode length product”, (2014)
  • Author(s): Y. Enami, Y. Jouane, D. Zhang, Y-C Chang, J. Luo, and Alex K-Y. Jen,
  • Organizer: Optical Society of America (OSA) Annual Meeting, Frontier in Optics
  • Place of Presentation: Tucson, AZ, 19-23 Oct, 2014.
  • Year and Date: 2014-10-19
  • Int'l Joint Research
• [Presentation] “Electro-optic polymer/TiO2 multilayer slot waveguide modulators” (2014)
  • Author(s): Y. Enami, Y. Jouane, D. Zhang, Y-C Chang, J. Luo, and Alex K-Y. Jen,
  • Organizer: The IEEE Photonics Conference (IPC),
  • Place of Presentation: San Diego, CA
  • Year and Date: 2014-10-12
  • Int'l Joint Research
• [Presentation] “High Pockels coefficient for poled polymer in multilayer electro-optic devices”, (2014)
  • Author(s): Y. Jouane, Y-C Chang, D. Zhang, J. Luo, Alex K-Y. Jen, and Y. Enami,
  • Organizer: Solid State Devices and Materials (SSDM) 2014
  • Place of Presentation: Tsukuba, Japan
  • Year and Date: 2014-09-08
  • Int'l Joint Research
• [Presentation] “Electro-optic polymer/TiO2 slot waveguide modulators driven with low half-wave voltage” (2014)
  • Author(s): Y. Enami, Y. Jouane, D. Zhang, Y-C Chang, J. Luo, and Alex K-Y. Jen , , Tsukuba, Japan, 8-11 Sep, 2014.
  • Organizer: Solid State Devices and Materials (SSDM) 2014
  • Place of Presentation: Tsukuba, Japan
  • Year and Date: 2014-09-08
  • Int'l Joint Research
• [Presentation] “Electro-optic polymer/TiO2 multilayer slot waveguide modulators”, (2014)
  • Author(s): Y. Enami, J. Luo, and A. Jen,
  • Organizer: The 2014 International Conference for top and emerging material scientists
  • Place of Presentation: Zhuhai, China, 20th – 24th of July, 2014.
  • Year and Date: 2014-07-20
  • Int'l Joint Research / Invited
• [Presentation] “Hybrid electro-optic polymer/TiO2 multilayer waveguide modulators on mesoporous sol-gel silica cladding”, (2014)
  • Author(s): Y. Enami, J. Luo, and A. Jen
  • Organizer: Optical Society of America (OSA), The Advanced Photonics for Communications Congress 2014
  • Place of Presentation: San Diego, CA, USA,
  • Year and Date: 2014-07-13
  • Int'l Joint Research
• [Presentation] Efficient poling in TiO2/electro-optic polymer/TiO2 multilayer slot waveguide modulators” (2014)
  • Author(s): Y. Enami, J. Luo, and A. Je
  • Organizer: SPIE(The International Society for Optical Engineering) Photonics West, 8986-43 (2014)
  • Place of Presentation: San Francisco, CA, USA
  • Year and Date: 2014-02-01 – 2014-02-06
• [Presentation] “Electro-Optic Polymer/TiO2 Multilayer Slot Waveguide Modulators for Optical Interconnections” (2013)
  • Author(s): Y. Enami, J. Luo, and A. Jen
  • Organizer: Optical Society of America Annual Meeting, Frontier in Optics 2013, FTu4E.5. (2013)
  • Place of Presentation: Orlando, Florida, USA
  • Year and Date: 2013-10-06 – 2013-10-10
• [Presentation] “Electro-Optic Polymer Modulators Based on Hybrid and Multilayer Slot Waveguides” (2013)
  • Author(s): Y. Enami and A. Jen
  • Organizer: Conference on Lasers and Electro-Optics (CLEO) Pacific Rim, ThL2-1[Invited]
  • Place of Presentation: Kyoto, Japan
  • Year and Date: 2013-07-04
  • Invited
• [Presentation] “High Confinement and Efficient Poling in TiO2/Electro-Optic Polymer/TiO2 Multilayer Slot Waveguide Modulators” (2013)
  • Author(s): Y. Enami, J. Luo, and A. Jen
  • Organizer: Collaborative conference on 3D & Materials Research (3DMR), pp. 303 (2013)
  • Place of Presentation: Jeju Korea
  • Year and Date: 2013-06-24 – 2013-06-28
  • Invited
• [Presentation] “Sol-gel silica planar waveguide doped with a green fluorescent protein for biophotonic sensor network” (2013)
  • Author(s): Y. Enami and S. Suye
  • Organizer: Optics in the Life Sciences, Bio-optics: Design and Application, Optical Society of America Topical Meeting, JT2A.9
  • Place of Presentation: Kona, Hawaii, USA
  • Year and Date: 2013-04-17
• [Presentation] ハイブリッド導波路や新規スロット導波路構造によるポリマ光変調器の開発 (2013)
  • Author(s): 榎波康文
  • Organizer: 春期電子情報通信学会総合大会シンポジウム （招聘講演）
  • Place of Presentation: 岐阜
  • Invited
• [Presentation] ハイブリッド型ポリマ光変調器 (2012)
  • Author(s): 榎波康文
  • Organizer: 電子情報通信学会光通信システム研究専門委員会講演予稿集pp.14-17, 2012. （招聘講演）
  • Place of Presentation: 静岡
  • Invited
• [Presentation] ハイブリッド型ゾルゲルシリカ・電気光学ポリマ変調器 (2012)
  • Author(s): 榎波康文
  • Organizer: 電子情報通信学会ソサイエティ大会シンポジウム (招聘講演)
  • Place of Presentation: 富山
  • Invited
• [Presentation] Electro-optic polymer/TiO2 multilayer slot waveguides for ultra-low voltage operation” (Invited) (2012)
  • Author(s): Y. Enami, C. Zhang, J. Luo, and A. K-Y. Jen
  • Organizer: Collaborative conference on 3D & Materials Research (3DMR), Seoul Korea, pp. 80 (2012) (招聘講演)
  • Place of Presentation: Seoul Korea
  • Invited
• [Presentation] Hybrid electro-optic polymer/silica waveguide modulators and biophotonic sensor network based on sol-gel silica waveguides” (Invited) (2012)
  • Author(s): Y. Enami, and A. K-Y.Jen,
  • Organizer: BIT’s 1st annual world congress of emerging InfoTech (WCEIT-2012), Track-2, pp. 41 (8. 28-30, 2012) (招聘講演)
  • Place of Presentation: Dalian, China
  • Invited
• [Presentation] Hybird electro-optic waveguide modulators for ultra-low power communications and interconnections (2012)
  • Author(s): Y. Enami
  • Organizer: EMN Fall meeting 2012, (招聘講演)
  • Place of Presentation: Las Vegas USA
  • Invited
• [Presentation] Hybrid electro-optic polymer modulators and biosensors (2012)
  • Author(s): Y. Enami
  • Organizer: 2nd International Conference on Nanotek and Expo" (Nanotek-2012) , (招聘講演)
  • Place of Presentation: Philadelphia PA USA
  • Invited
• [Presentation] Hybrid electro-optic polymer modulators and biophotonic sensors based on sol-gel silica waveguides (2012)
  • Author(s): Y. Enami, J. Luo, A. K-Y. Jen
  • Organizer: European Optical Society Annual Meeting,, TOM5-5813 (2012)
  • Place of Presentation: Aberdeen, Scotland, UK
• [Book] 「バイオセンサ」第3部「認識物質ごとに見るバイオセンサ製品化のための高機能化と問題点の解決策（緑色蛍光タンパク質を利用したバイオセンサの事例）」 (2014)
  • Author(s): 榎波康文
  • Total Pages: 24
  • Publisher: (株)技術情報協会
• [Remarks] http://www.sceng.kochi-tech.ac.jp/yenami/
• [Remarks] 高知工科大学教員情報
  • URL: http://www.kochi-tech.ac.jp/kut/about_KUT/faculty_members/prof/enami-yasufumi.html
• [Remarks] 榎波研究室ホームページ
  • URL: http://www.sceng.kochi-tech.ac.jp/yenami/
• [Remarks] 研究室ウエッブ
  • URL: http://www.sceng.kochi-tech.ac.jp/yenami/
• [Remarks] 大学ウエッブ
  • URL: http://www.kochi-tech.ac.jp/kut/about_KUT/faculty_members/prof/enami-yasufumi.html
• [Patent(Industrial Property Rights)] 「光変調器」 (2015)
  • Inventor(s): 榎波康文
  • Industrial Property Rights Holder: 榎波康文
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2015-004259
  • Filing Date: 2015-01-13
• [Patent(Industrial Property Rights)] 光変調器 (2012)
  • Inventor(s): 榎波康文
  • Industrial Property Rights Holder: 榎波康文
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2012-209631
  • Filing Date: 2012-09-24