Faculty Members

LANGUAGE ≫ Japanese

IWASHITA, Katsushi

  • Year of birth: 1955
  • Gender: Male
  • Affiliation:
    - School of Systems Engineering
    - Electronic and Photonic Systems Engineering Course, Department of Engineering, Graduate School of Enginering
  • Personal web site: http://www.ele.kochi-tech.ac.jp/iwashita/
Areas of specialization
Laboratory/research office Laboratory of Light Control and Optical Network
We study about ultrahigh capacity optical network using MIMO (Multiple-Input Multiple-Output) technology and high precision non-invasive optical measurement including optical coherence tomography (OCT) and fiber sensing.
Current research topics
Educational background 1979: Master
Professional background 1979-2004: 
Academic societies

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* Courses provided in English are shown with (E) mark

Undergraduate school
  • Introduction to Electromagnetic and Optical Waves
  • Experiments of Electronic and Photonic 2
  • Graduation Thesis
  • Optical Communication Systems
  • Introduction to Communication Instruments
  • Networking Methods
  • Electrical Communication Laws
  • Reliability Engineering
  • Introduction to Communication Systems
Graduate school
  • Optical Communication Engineering
  • Seminar 1
  • Seminar 2
  • Individual Work for Graduate
  • Advanced Seminar 1
  • Advanced Seminar 2

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Research activities

Research papers
  1. Authors: Bishal Poudel, Joji Oshima, Hirokazu Kobayashi, Katsushi Iwashita
    Title: MIMO detection using a deep learning neural network in a mode division multiplexing optical transmission system
    Journal: Optics communications, Vol. 440, pp. 41-48, ELSEVIER
    Year: 2019
  2. Authors: Bishal Poudel, Joji Oshima, Hirokazu Kobayashi, Katsushi Iwashita
    Title: Passive Optical Delivering Network using Conventional Graded-index Multi-mode Fiber with Mode Division Multiplexing and Sub-carrier Multiplexing
    Journal: Journal of Optical Communications and Networking, Vol. 10, No. 3
    Year: 2018
  3. Authors: Yuki Morizumi, KOBAYASHI Hirokazu, IWASHITA Katsushi
    Title: User selective mode-forming remote switch in multi-mode fiber distributing networks using MIMO processing
    Journal: Optics communications, Vol. 392, pp. 234-238, Elsevier
    Year: 2017
  4. Authors: Mudabbir Badar, KOBAYASHI Hirokazu, IWASHITA Katsushi
    Title: Spatial Resolution Improvement in OFDR Using Four Wave Mixing and DSB-SC Modulation
    Journal: IEEE Photonics Technology Letters, Vol. 28, No. 15, pp. 1680-1683, IEEE]
    Year: 2016
  5. Authors: Badar Mudabbir, KOBAYASHI Hirokazu, IWASHITA Katsushi
    Title: Demonstration of format free wavelength conversion for optical networks
    Journal: Optical and Quantum Electronics, Vol. 48, No. 1, Springer
    Year: 2016
  6. Authors: Badar Mudabbir, KOBAYASHI Hirokazu, IWASHITA Katsushi
    Title: Chromatic dispersion measurement with double sideband phase noise canceled OFDR
    Journal: Optics Communications, Vol. 356, pp. 350-355
    Year: 2015
  7. Authors: Hiroyuki Mima, IWASHITA Katsushi
    Title: Dual-Channel Simultaneous Wavelength Conversion With OSSB Modulator and AWG
    Journal: IEEE Photonics Technology Letters, Vol. 26, No. 14, pp. 1462-1465, IEEE
    Year: 2014
  8. Authors: Badar Mudabbir, Takuya Hino, IWASHITA Katsushi
    Title: Phase Noise Cancelled OFDR With cm-Level Spatial Resolution Using Phase Diversity
    Journal: IEEE Photonics Technology Letters, Vol. 26, No. 9, pp. 858-856, IEEE
    Year: 2014
  9. Authors: ZHANG Yang, Junya Matsushita, Tomoyasu Nishimori, IWASHITA Katsushi
    Title: SCM-SS scheme for optical MIMO transmission using multimode fibers
    Journal: Communication Express, Vol. 2, No. 6, pp. 268-273, IEICE
    Year: 2013
  10. Authors: 平松 秀太, IWASHITA Katsushi
    Title: A Novel Phase-Noise Cancelled Optical Frequency Domain Reflectometry using Modulation Sidebands
    Journal: Photonics and Optoelectronics(P&O), Vol. 1, No. 3, pp. 60-64, Photonics and Optoelectronics
    Year: 2012
  11. Authors: Jing Liang, IWASHITA Katsushi
    Title: A Novel Compensation Method for FWM Impaiments based on Cancellation by Estimated Components in Digital Coherent Detection
    Journal: IEEE Photonics Technology Letters, Vol. 23, No. 19, pp. 1394-1396, IEEE
    Year: 2011
  12. Authors: Liang Jing, IWASHITA Katsushi
    Title: FWM Compensation in DPSK Transmission by Reducing Detection with Digital Coherent Detection Using Backward Propagation
    Journal: international Journal of Information and Electronics engineering, Vol. 1, No. 1, pp. 99-104
    Year: 2011
  13. Authors: LIANG Jing, Katsushi Iwashita
    Title: Experimental compensation for FWM induced crosstalk with digital coherent detection
    Journal: IEICE transaction on communications, Vol. E94-B, No. 2, pp. 558-561
    Year: 2011
  14. Authors: Jing Liang, IWASHITA Katsushi
    Title: Inter-Channel FWM Impaiments Compensation of ASK Transmission with Digital Coherent Detection
    Journal: ECOC2010, No. P3.04
    Year: 2010
  15. Authors: J. Liang, K. Iwashita
    Title: Electrical Compensation of FWM Impairment by Heterodyne Detection Using Backward Propagation
    Journal: OECC TuK6
    Year: 2009
  16. Authors: K.Iwashita, K.Nakajima
    Title: Parameter estimation for adaptive electrical equalization of multimode-fiber dispersion using sub-carrier multiplexing scheme
    Journal: OECC ThP-92
    Year: 2008
  17. Authors: K.Nakatsuma, K.Iwashita
    Title: Performance evaluation and experimental demonstration of optical frequency converter based on optical SSB modulator and Mach-Zehnder interferometer
    Journal: OECC, ThP-78
    Year: 2008
  18. Authors: K.Iwashita, K.Nakajima
    Title: Digitally Tunable Optical Frequency Converter based on Optical SSB Modulators and Mach –Zehnder Interferometers
    Journal: in Proc.OFC/in Proc.OFC/NFOEC2007, JWA56, Anaheim
    Year: 2007
  19. Authors: K.Nakajima, K.Iwashita
    Title: Electrical Equalization of Multipath Interferences using Subcarrier Multiplexing of a Single Frequency Light Source
    Journal: in Proc. LEOS annual meeting 2006, TuCC2, Montreal
    Year: 2006
  20. Authors: I.Yamasaki, R.Kawamura, K.Iwashita
    Title: A Profit Maximization Scheme by Service-list Control for Multiple Class Services
    Journal: IEICE Japan Network 2004, Vol. E87-B, No. 5, p. 1334
    Year: 2004
  21. Authors: K.Iwashita, T.Matsumoto
    Title: Modulation and detection characteristics of optical contiguous phase FSK transmission systems
    Journal: IEEE Journal of Lightwave Technologies, Vol. LT-5, No. 4
    Year: 1987

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Social activities

Committee roles
  1. IEEE Japan Council History Committee , IEEE, 2015-2016
  2. IEEE Japan Council History Committee, IEEE, 2013-2014
  3. The 15th Asia-Pacific Network Operation and Management Symposium(APNOMS2013) Technical Program Committee, Asia-Pacific Network Operations and Management Symposium(APNOMS) , 2013-2014
Published books
  1. Coherent Lightwave Communications Technologies, Chapman&Hall, 1995

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