Company Filing History:
Years Active: 2002
Title: Innovations of Takenori Uchiyama in Optical Fiber Technology
Introduction
Takenori Uchiyama is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of optical fiber technology. His innovative work has led to the development of a unique optical fiber preform that addresses critical issues in transmission loss.
Latest Patents
Uchiyama holds a patent for an optical fiber and method of making the same. The patent describes an optical fiber preform with a viscosity ratio Rη=η /η of 2.5 or less between the core average viscosity η and the total average viscosity η. This preform is drawn in a drawing furnace to yield an optical fiber, which is then heated to a specific temperature range in a downstream heating furnace. This process lowers the fictive temperature Tf within the optical fiber, thereby reducing Rayleigh scattering loss. The viscosity ratio condition of Rη≤2.5 also helps to prevent stress concentration in the core, minimizing structural asymmetry loss. As a result, this innovation significantly reduces transmission loss caused by Rayleigh scattering and other factors.
Career Highlights
Uchiyama is currently employed at Sumitomo Electric Industries, Limited, where he continues to advance optical fiber technology. His work has been instrumental in enhancing the performance and reliability of optical fibers used in various applications.
Collaborations
Uchiyama has collaborated with notable colleagues such as Katsuya Nagayama and Yuichi Ohga. Their combined expertise has contributed to the success of their projects and innovations in the field.
Conclusion
Takenori Uchiyama's contributions to optical fiber technology exemplify the importance of innovation in reducing transmission loss. His work not only enhances the efficiency of optical fibers but also paves the way for future advancements in the field.