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

About our Research
About our Research

News & Topics

2024-04-20Research Presentations

Two research presentations at ALPS2024New!!!

2024-03-23Research Presentations

Two research results were presented at the Spring Meeting of the Japan Society of Applied Physics

2024-03-12Research Presentations

Two poster presentations at the 23rd Laser Society of Japan Tokyo Section Meeting

2024-03-05Awards

The Institute of Electronics, Information and Communication Engineers (IEICE) Electronics Society Activity Meritorious Service Award

2024-03-04Research Presentations

Presentation of research results at the 2024 IEICE General Conference

2024-02-23Awards

Riku Imamura, Laser Society of Japan, Award for Encouragement of Paper Presentation at the 44th Annual Meeting of Laser Society of Japan

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~ 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.

Information on Laboratory Information Sessions

Laboratory information session for students to be assigned in March 2024 has started!
Interested students are always welcome to visit the lab!

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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.

View Application Requirements
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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

Fabrication of high Q-value single-crystal micro optical resonators by ultra-precision machining

Opening New Possibilities for Resonator Decentralized Control

Broadband parametric light generation using a high-Q single-crystal micro optical resonator

Toward Broadband Wavelength Conversion Devices

Photolithographically fabricated silicon photonic crystal nanocavity photoreceiver with laterally integrated p-i-n diode

Towards a compact monitoring device for optical networks
Latest Research Information