Hirofumi Shimomura

Title: Hirofumi Shimomura: Innovator in Optical Communication Technologies

Introduction

Hirofumi Shimomura is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of optical communication, holding a total of 11 patents. His work focuses on enhancing communication systems through innovative technologies.

Latest Patents

One of Shimomura's latest patents is titled "Ring network for sharing protection resource by working communication paths." This invention establishes multiple working paths on each working ring and multiple protection paths on each of the protection rings. The design allows for signal transmission in both directions between two nodes, ensuring that if one working path fails, a corresponding protection path can be utilized.

Another notable patent is for an "Optical switch, optical amplifier and optical power controller as well as optical add-drop multiplexer." This invention includes several optical transmission lines equipped with impurity doped fibers. It features an excitation light source and a switch that enables individual switching operations to supply excitation light to selected transmission lines, allowing for efficient signal transmission while preventing interference from unselected fibers.

Career Highlights

Hirofumi Shimomura is currently employed at NEC Corporation, a leading technology company known for its advancements in information technology and communications. His work at NEC has allowed him to develop and refine his innovative ideas in optical communication.

Collaborations

Throughout his career, Shimomura has collaborated with notable colleagues, including Naoya Henmi and Hitoshi Takeshita. These partnerships have contributed to the development of cutting-edge technologies in the field.

Conclusion

Hirofumi Shimomura's contributions to optical communication technologies have made a significant impact on the industry. His innovative patents and collaborations continue to shape the future of communication systems.