On behalf of the Organizing Committee, we warmly welcome you to the International Conference on Optical and Terahertz Communications and Future Networks (OTCN 2025) in Tokyo, Japan, from September 26–28, 2025.
This inaugural conference brings together researchers, engineers, industry leaders, and policymakers to explore advancements in optical and terahertz communications, future network architectures, and their applications. With six core tracks—Optical Communications (T1), Terahertz Communications (T2), Future Networking (T3), Emerging Optical & THz Technologies (T4), Standards and Policy (T5), and Applications (T6)—OTCN 2025 bridges research and real-world innovation.
Through keynote speeches, technical sessions, and workshops, we aim to foster collaboration and drive progress. Tokyo, a hub of technology and culture, provides the perfect setting for this exchange of ideas.
We sincerely thank all contributors—authors, reviewers, sponsors, and our Technical Program Committee—for making this event possible. We hope OTCN 2025 inspires new ideas, meaningful connections, and impactful innovations.