Feng-Qing Zhou

Title: Innovations of Feng-Qing Zhou in Optical Devices

Introduction

Feng-Qing Zhou is a notable inventor based in San Jose, California, recognized for his contributions to the field of optical devices. With a total of six patents to his name, Zhou has made significant advancements in the development of miniature circulator devices.

Latest Patents

Zhou's latest patents focus on miniature optical devices, particularly circulator array devices, which are fabricated using thin film coating technology. A typical optical device designed by Zhou includes two refraction elements arranged opposite each other along a propagation axis. These elements are coupled on opposite ends to first and second polarization orientation elements, with first and second polarization beam splitter (PBS) elements linked to the respective orientation elements. The refraction elements consist of complementary Wollaston Prism elements or Rochon Prism elements. Each polarization orientation element incorporates a Faraday rotator element, and in some embodiments, a half-wave plate formed using thin film coating techniques. The Faraday rotator elements are periodically poled using selective poling techniques to create oppositely oriented magnetic domains, allowing for polarization rotations of 45 degrees in both clockwise and counter-clockwise directions on the same magnetic garnet. Periodically etched half-wave plates are also utilized in some embodiments.

Career Highlights

Throughout his career, Feng-Qing Zhou has worked with several prominent companies, including Lightwaves 2020, Inc. and JDS Uniphase Corporation. His work has significantly impacted the development of optical technologies, enhancing the capabilities of miniature devices in various applications.

Collaborations

Zhou has collaborated with notable colleagues, including Jing-Jong J Pan and Ming Zhou, contributing to the advancement of optical device technology through teamwork and shared expertise.

Conclusion

Feng-Qing Zhou's innovative work in the field of optical devices, particularly his patents on miniature circulator devices, showcases his significant contributions to technology. His collaborations and career highlights further emphasize his role as a leading inventor in this specialized area.