Company Filing History:
Years Active: 2010-2011
Title: Innovations of Ping-Chiek Koh in Optical Modulation
Introduction
Ping-Chiek Koh is a notable inventor based in Goleta, California. He has made significant contributions to the field of optical telecommunications, particularly through his innovative patents. With a total of 2 patents, Koh's work focuses on enhancing the performance of optical modulators.
Latest Patents
Koh's latest patents include two groundbreaking inventions. The first patent is titled "Integrated on-chip inductors and capacitors for improved performance of an optical modulator." This invention discloses an optical modulator for fiberoptic telecommunications, where the optical signal velocity in the modulator waveguide and the electrical signal velocity in the traveling wave signal electrode are purposely mismatched by a factor of up to about 4. On-chip integrated inductors and capacitors are implemented to achieve this velocity mismatch, resulting in improved electro-optic characteristics such as return loss and sharper cut-off bandwidth.
The second patent is "Bias-control for optical Mach-Zehnder modulators with voltage-induced optical absorption." This invention presents a bias-control circuit that provides operating point control for a Mach-Zehnder modulator experiencing optical absorption at their interferometric arms. The bias control circuit generates compensation signals to counter the thermally induced index shifts caused by absorption. Additionally, it allows for the selection of an operating point with desirable transmitter characteristics by over-compensating or under-compensating thermal effects.
Career Highlights
Ping-Chiek Koh is currently employed at JDS Uniphase Corporation, a leading company in the telecommunications industry. His work at the company has been instrumental in advancing optical modulation technologies.
Collaborations
Koh collaborates with Michael C Larson, contributing to the development of innovative solutions in optical telecommunications.
Conclusion
Ping-Chiek Koh's contributions to optical modulation through his patents demonstrate his expertise and commitment to advancing technology in telecommunications. His work continues to influence the field significantly.