The 1st International Conference on Optical and Terahertz Communications and Future Networks (OTCN 2025) will be held in Tokyo, Japan, from September 26 to 28, 2025. This conference serves as a premier platform for global researchers to exchange cutting-edge insights on optical communications, terahertz technologies, future network architectures, and their transformative applications. The conference will highlight groundbreaking research, technological advancements, and industry trends, bridging theoretical innovation to real-world implementation. We warmly invite submissions from scholars, researchers, engineers, and industry leaders worldwide to shape the future of communication technologies.

The topics of interest include, but are not limited to:(More topics: https://otcn.cc/cfp.html)

T1: Optical Communications and Networking  

Advanced fiber-optic systems

High-speed optical access networks

T2: Terahertz Communications and Networking  

THz channel modeling and experimental measurements

High-gain THz antennas and metasurfaces

T3: Future Networking Architectures  

Software-defined networking (SDN) for optical and THz systems

Network function virtualization (NFV) in high-speed networks

T4: Emerging Optical & THz Technologies  

Quantum networks leveraging optical/THz technologies

Blockchain for secure and decentralized networking

T5: Standards and Policy  

    Spectrum allocation and coexistence for THz

    Security protocols for optical and THz networks

T6: Applications and Use Cases  

   THz communications for space and satellite networks

   Optical and THz in biomedical imaging and diagnostics