Yukihiko Suga

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About

Yukihiko Suga is a leading researcher in high-speed free-space optical (FSO) communications, with a focus on beam stabilization, spatial diversity reception, and mobile optical links. His most notable contribution is the experimental demonstration of a 40-Gbps mobile FSO link using a three-stage high-speed optical beam stabilizer combined with a two-dimensional photodetector array for diversity reception. This work, published in 2025 and already garnering early citations, addresses a critical challenge in FSO: maintaining a stable, high-throughput connection despite platform motion or atmospheric disturbances. By integrating maximum-ratio combining digital signal processing with the photodetector array, Suga’s approach significantly mitigates signal fading and enhances link reliability. His research bridges the gap between theoretical optical wireless systems and practical, mobile deployment—paving the way for next-generation terrestrial and aerial communication networks. With a career marked by innovative system-level designs and real-world experimental validation, Suga continues to push the boundaries of data rate and robustness in free-space optics, making his work essential reading for students and engineers advancing beyond traditional fiber and radio-frequency links.