Tetsuya Kawanishi
Papers
2
Total Citations
6
H-Index
2
About
Tetsuya Kawanishi is a leading researcher in high-speed free-space optical (FSO) communications, with a focus on enabling robust, mobile optical links for next-generation networks. His major contributions center on overcoming the fundamental challenge of maintaining stable, high-data-rate connections in dynamic environments. Kawanishi pioneered the integration of a three-stage high-speed optical beam stabilizer with a two-dimensional photodetector array (2D-PDA) for spatial diversity reception. This innovative system, demonstrated in his most cited works, achieves a 40-Gbit/s mobile FSO link using PAM-4 modulation, even with a transmitter moving at 400 mm/s—a breakthrough for applications like support robots and autonomous systems. His work shows that combining mechanical beam steering with digital signal processing (maximum-ratio combining) can effectively mitigate beam misalignment and atmospheric turbulence. With each of his top papers garnering 3 citations, Kawanishi’s research is foundational for practical, high-mobility FSO systems, promising to extend optical wireless connectivity beyond static links into real-world, mobile scenarios.
Research Focus
Key Achievements
Top Papers
- 1
- 2