As the health and safety of the participants is our highest priority and given the recent trends in increasing COVID cases in Japan as well as travel restrictions for people who wish to enter Japan from overseas, the symposium organizers believe it is best to present the conference online only.


Welcome to the 6th International Symposium on Extremely Advanced Transmission Technologies (EXAT2021). 

The objective of this symposium is to discuss the current status and future trends of 3M (multi-core, multi-mode. multi-level modulation) technologies.

Plenary and invited speakers will give an overview of on-going SDM related research projects as well as an outlook towards the future of optical communications. Furthermore, an extensive poster session will also provide opportunities for discussions and information exchange on the latest hot research topics in this field.

about EXAT

EXAT community in JAPAN initiated the discussion and promotion of the research and development of the Extremely Advanced Optical Transmission technology in 2008 and has led the investigation of the so-called 3M (multi-core, multi-mode, multi-level) technologies. The scope of EXAT includes novel optical fibers, components, and transmission and node technologies for space-division-multiplexing (SDM). 

Since 2010, the EXAT committee has been organized as a technical committee of the Communication Society, the Institute of Electronics, Information and Communication Engineers (IEICE). For more details on the Technical Committee on Extremely Advanced Optical Transmission Technologies (EXAT) and its activities please visit the EXAT website.

Important Dates

Poster Abstract Submission Deadline:
3 September, 2021, 17:00 JST

extended to 24 September 2021, 17:00 JST

Registration Open:
1 September, 2021, 17:00 JST

Online Registration is now open