Seungug Koh

Title: Seungug Koh: Innovator in Optical Clock Distribution Networks

Introduction

Seungug Koh is a notable inventor based in Cincinnati, OH (US). He has made significant contributions to the field of optical technologies, particularly in the design of clock distribution networks for multichip modules.

Latest Patents

Koh holds a patent for an "Optical synchronous clock distribution network and high-speed signal." This innovative design features an optical waveguide H-tree that enables global clock distribution with nearly zero clock skew. It is particularly beneficial for distributed computer system environments. The design incorporates channel waveguides, curved sections, and directional couplers made from silica glass and silicon oxynitride (SiON) technologies. The hybrid use of SiON and silica glass combines the advantages of both materials. The clock speed achievable is determined by the laser diode source and photodiode receiver at each chip module, rather than the optical waveguide distribution network itself. This high-speed optical waveguide can transmit clock signals or serve as a multi-wavelength communication network for various integrated circuits (ICs) on the multichip module. Multiple laser diodes with different output wavelengths are directed into an optical multiplexer, while optical demultiplexers at the ICs filter the signals into individual outputs. Additionally, multiple 'stacked' optical waveguides can be constructed on the MCM to transmit various optical signals.

Career Highlights

Seungug Koh is affiliated with the University of Cincinnati, where he continues to advance research in optical technologies. His work has garnered attention for its potential applications in high-speed computing and communication systems.

Collaborations

Koh has collaborated with notable colleagues, including Joseph T Boyd and Harold W Carter, contributing to the advancement of optical technologies in their respective fields.

Conclusion

Seungug Koh's innovative work in optical synchronous clock distribution networks exemplifies the potential of optical technologies in enhancing computing systems. His contributions are paving the way for future advancements in high-speed communication networks.