NAGOYA UNIVERSITY

Nagoya University · Hasegawa Laboratory

  1. We design next-generation optical switches that route signals arriving over optical fibers and can handle very large volumes of traffic.

  2. We use digital signal processing to compensate for noise in transmitted signals, enabling long-distance transmission that was previously unachievable.λ1 passes through the node as lightλ2 is dropped and demodulated by a pluggable transceiver

  3. We seek to understand the physics of light in optical fibers and to clarify the limits of the capacity and distance of communication systems.

  4. We devise and implement algorithms that control networks efficiently. We are now applying machine learning to problems that could not previously be solved.color = wavelength×request that cannot be accommodatedthe network is a conceptual illustration

News

NEWS

News

All news →
  • Conference

    Five members — first-year master’s students Yusuke Iida, Juan Nishi, Ryota Hosokawa and Izuru Makino and fourth-year undergraduate Haruki Matsunaga — will give presentations at PSC 2026.

  • Conference

    Four members — second-year master’s students Shunya Shimoi and Taisei Sekizuka, first-year master’s student Ryota Hosokawa and Assistant Professor Takuma Kuno — will give presentations at ECOC 2026.

  • Award

    First-year master’s student Yusuke Iida received the IEICE Tokai Section Student Research Encouragement Award.

  • Award

    Second-year master’s student Kouki Kidani received the APN 2026 Student Award at the IEICE APN Workshop 2026.

  • Award

    Second-year master’s students Shunya Shimoi and Koki Mano received the IEEE Nagoya Section Conference Presentation Award.

RESEARCH

Research

Traffic over optical fiber networks continues to grow. Working toward the high-capacity optical networks of the next generation, the Hasegawa Laboratory approaches the challenge from four directions: switching equipment, transceivers, transmission links and network control.

More about our research →
01

Optical routing

We design next-generation optical switches that route signals arriving over optical fibers and can handle very large volumes of traffic.

KEYWORDSROADM / optical cross-connects / wavelength-selective switches

See it in the film above 02

Optical transceivers

We use digital signal processing to compensate for noise in transmitted signals, enabling long-distance transmission that was previously unachievable.

KEYWORDScoherent reception / digital signal processing / signal regeneration

See it in the film above 03

Optical links

We seek to understand the physics of light in optical fibers and to clarify the limits of the capacity and distance of communication systems.

KEYWORDSnonlinear optical effects / optically amplified transmission / transmission limits

See it in the film above 04

Network control

We devise and implement algorithms that control networks efficiently. We are now applying machine learning to problems that could not previously be solved.

KEYWORDSrouting and wavelength assignment (RWA) / wavelength continuity / machine learning

See it in the film above

JOIN US

Visit the laboratory

For prospective students

You are welcome to visit the laboratory at any time. Our faculty and students will be happy to tell you in person about our research topics, day-to-day research and life in the laboratory.

Many of our students present their research at conferences in Japan and abroad. If you are interested, please come and see us.

When
At any time. Please contact us to arrange a date.
Where
Room 605, 6th floor, North Wing, IB Electronics and Information Building
Contact
Takuma Kuno, Assistant Professor

ACCESS

Access

Directions →
Address
Higashiyama Campus, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
Building and room
Room 605, 6th floor, North Wing, IB Electronics and Information Building (on the left with your back to the elevator hall)
Nearest station
Nagoya Daigaku Station, Meijo Line, Nagoya Municipal Subway: a short walk from Exit 3
Affiliation
Department of Information and Communication Engineering, Graduate School of Engineering