1990-1999, Assistant Professor at the Department of Electrical and Electronic Engineering, Ehime University, where he had been engaged in research and development of some optical devices for optical communication.
1997-1998, Visiting scholar at the University of California at Los Angeles, where he had been engaged in research of microwave and optical wave interactions
1999-2002, Lecturer, Department of Electrical and Electronic Engineering, Yamaguchi University.
2002-2016, Associate Professor at the Graduate School of Science and Engineering, Yamaguchi University.
2016-now, Associate Professor at the Graduate School of Science and Technology for Innovation, Yamaguchi University.
In Yamaguchi University, he had been engaged in research on the microwave applications of metamaterials, development of novel wireless power transmission technique and design of guided-wave type optical devices.
2003-2004, Treasurer and Secretary, IEEE Hiroshima Section
2005-2011, Associate Editor of IEICE Transactions on Electronics
2007-2008, Vice-Chair, IEEE Hiroshima Section
2009-2010, Steering Committee Member, IEEE Hiroshima Section
2011-2012, Chair, IEEE Hiroshima Section
2015-2017, Editorial Member of Journal of IEICE, Japan
Reviewer: IEICE, Japan, IEEE MTT-S, IET Electronics Letters and APM