Norio Kashima

Title: Norio Kashima: Innovator in Optical Transmission Systems

Introduction

Norio Kashima is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of optical transmission systems, holding a total of 2 patents. His work focuses on advanced technologies that enhance data transmission capabilities.

Latest Patents

Kashima's latest patents include an "Optical Transmission System Using Raman Optical Amplification" and an "Optical Transmission System Using Four-Wave Mixing." The first patent describes a system configured in a WDM-PON topology, where signal light is multi/demultiplexed at a WDM. This system allows the optical line terminal to supply continuous lights with specific wavelengths to optical network units through optical fibers. The continuous lights serve as uplink signals, while a pumping light excites the continuous lights for enhanced transmission.

The second patent outlines a system based on four-wave mixing, also configured in a WDM-PON topology. In this system, the optical line terminal transmits downlink signal light and pumping lights with predetermined wavelength differences. Each optical network unit demultiplexes the downlink signal lights to generate an uplink signal light, utilizing a portion of the downlink signals and four-wave mixing from the pumping lights.

Career Highlights

Throughout his career, Norio Kashima has worked with notable companies, including Fujikura Limited and Shibaura Institute of Technology. His experience in these organizations has contributed to his expertise in optical technologies and innovations.

Collaborations

Due to space constraints, the collaborations section has been omitted.

Conclusion

Norio Kashima's contributions to optical transmission systems demonstrate his innovative spirit and technical expertise. His patents reflect advancements that are crucial for the future of data communication technologies.