News & Topics
We are striving for ultimate energy saving using photonic technologies
With light.
Aiming for "Ultimate Energy Conservation
Tanabe Photonic Structure Group, Keio University
Department of Electrical and Computer Engineering, Faculty of Science and Technology, Keio University
Tanabe Photonic Structure Laboratory
- 2026-10-05Want to Join?We have updated the information regarding lab assignments for the 2027 academic year.
- 2026-10-01NoticeNew Member: Tristan D'Hervé has joined the lab as a DD student
- 2026-09-30NoticeMr. Tando Completes His Master's Program and Enters the Doctoral Program
- 2026-09-25Research PresentationsComparison of Orthogonal Modulation Schemes for Terahertz Wireless Transmission Utilizing the Entire Optical Comb (The Institute of Electronics, Information and Communication Engineers)
- 2026-09-18EventsWe held a farewell party for Zhiming
- 2026-09-11Research PresentationsWe presented five research findings at the Fall Academic Conference of the Japan Society of Applied Physics.
~ 3rd Grade Attention! ~Senior
Can you stop light? Why does shutting off light save energy?
<Tanabe Photonic Structures Lab.
Since light does not generate Joule heat when transmitted, it offers the ultimate in energy savings. However, there are many difficulties in realizing optical signal processing. One of them is memory, which cannot retain information without "stopping light.
The Tanabe Photonic Structures Laboratory develops light-stopping and light-containment technologies that will bring a breakthrough in optical signal processing research and realize ultra energy-efficient information processing.
We have started the lab information sessions for students joining in April 2027!
Interested students are always welcome to visit the lab!
Attention! To all bachelor students
Get a taste of the atmosphere of a university laboratory through a part-time experience!
Tanabe Photonic Structure Laboratory
Part-time job wanted!
Research Assistant
Undergraduate students in European and U.S. universities learn about university laboratories by working part-time as Research Assistants / Lab Assistants. In the Tanabe Laboratory for Photonic Structures, we have decided to recruit a part-time general research assistant from inside and outside of the university, so that motivated students can have such an opportunity.
About our Research
In the Tanabe Photonic Structures Lab.
Exploring the fundamental of light and new applications of light
In the Tanabe Photonic Structures Lab.
Exploring the fundamental of light and new applications of light
Replacing conventional electrical signal processing with optical processing can achieve significant energy savings in signal processing, which was not possible before.
We are developing a small container that confines light, called a micro optical resonator to realize an optical LSI.
Replacing conventional electrical signal processing with optical processing can achieve significant energy savings in signal processing, which was not possible before.
We are developing a small container that confines light, called a micro optical resonator to realize an optical LSI.

Latest Research Information
Opening New Possibilities for Resonator Decentralized Control
Toward Broadband Wavelength Conversion Devices
Towards a compact monitoring device for optical networks
