Ibaraki University's
Graduate School of Science and Engineering (Engineering)
Department of Electrical and Electronic Engineering




  1. Hokkaido University, Research Assistant 1982/04-1989/03
  2. Kyushu Institute of Technology, Associate Professor 1989/04-2002/03
  3. Ibaraki University, Professor 2002/04-Present

Academic background

  1. Hokkaido University Engineering Applied Physics 1977 Graduated
  2. Hokkaido University Engineering Applied Physics Doctor course 1982 Completed

Academic degrees

  1. Dr. Engineering Hokkaido University

Research Areas

  1. Applied Optics・Quantum Optical Engineering
  2. Information and Communication Engineering

Research keywords

  1. ・Optical chaos and nonlinear effects in optica devices and its application to optical chaos communication and optical sensing ・Terahertz wave time domain spectroscopy and its application to diagnostic systems

Subject of research

  1. ・Chaos in optical devices and its application to optical secure communication and optical sensing ・Optical velocimeter based on low coherence interferometry and its application to bionics measurement 1990-Present
  2. ・Terahertz wave time domain spectroscopy and its application to diagnostics system ・テラヘルツ波領域の電磁波の吸収分光特性を計測・分析するシステムの開発とその種々の液体に対するクラスター分析への応用。

Proposed theme of joint or funded research

  1. Laser Flowmetry Wish to undertake joint research with industry and other organizations including private sector. Technical consultation,Commisioned research,Joint research


  1. 光波工学を学ぶ 今井洋 理工図書 2010/03/08 978-4-8446-0751-9 光波工学の基礎・光エレクトロニクスの基礎


  1. Research paper (international conference proceedings) Joint A low loss butt-joint connection by using a graded-index photonic crystal fiber K. Higuchi, H. Yokota, K. Yoneya, Y. Imai Proc. MOC’15 H59 2015/10/25
  2. Research paper (scientific journal) Joint Light propagation characteristics in photonic crystal fiber with graded air hole diameters H. Yokota, K. Yoneya, K. Higuchi, and Y. Imai Optical Engineering 53 2015/06/15 031203-1-5
  3. Research paper (scientific journal) Joint Fabrication of photonic crystal fiber optical attenuators with air hole diameter control using CO2 laser irradiation technique H. Yokota, K. Ushiroda, N. Inoue, Y. Imai, Y. Sasaki Optical Fiber Technology 23, 37-41 2015/01/15
  4. Research paper (scientific journal) Joint Nondestructive evaluation of crystallized-particle size in lactose-powder by terahertz time-domain spectroscopy S.Yamauchi, S.Hatakeyama, Y.Imai, and M. Tonouchi Optical Engineering 53, 031203-1-5 2014
  5. Research paper (international conference proceedings) Joint Evaluation of interfacial water on super-hydrophilic surface by THz-TDS S.Yamauchi, Y.Imai, and M.Tonouchi S.Yamauchi, Y.Imai, and M.Tonouchi P1-14 2013

Research presentations

  1. Oral presentation(general) 1.5um帯レーザ励起THz波発振素子特性 第23回電気学会東京支部茨城支所研究発表会 2015/11
  2. Oral presentation(general) 偏波面保存光ファイバにおける放射線照射の影響とその応用 第22回電気学会東京支部茨城支所研究発表会 2014/11
  3. Oral presentation(general) 偏波保持ファイバブラッググレーティングの特性に対する放射線照射の影響 電子情報通信学会技術報告 2014/11
  4. Oral presentation(general) ファイバグレーティングの反射特性に対する放射線照射の影響 第75回応用物理学会学術講演会 2014/03
  5. Oral presentation(general) 偏波面保存光ファイバを用いた放射線センシングの基礎実験 第22回電気学会東京支部茨城支所研究講演会 2013/11

Intellectual property rights

  1. Patent THz波を用いた資料の構造分析方法とその構造 特願2008‐39555 2008/02/21

Alloted class

  1. Optical Information Electronics
  2. Electromagnetism Ⅰ and Excercise
  3. Presentation for Electrical and Electronic Engineering
  4. Advanced Electrical and Electronic Engineering Laboratory I
  5. Advanced Exercise in Electrical and Electronic Engineering I

Memberships of academic societies

  1. Optical Society of America
  2. 日本光学会
  3. 電子情報通信学会
  4. 応用物理学会