Company Filing History:
Years Active: 2018-2024
Title: Takashi Kotanigawa: Innovator in Optical Transmission Technology
Introduction
Takashi Kotanigawa is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of optical transmission technology, holding a total of 6 patents. His work focuses on improving the efficiency and reliability of optical communication systems.
Latest Patents
Kotanigawa's latest patents include an optical transmission system and a filter penalty reduction method. The problem addressed by this invention is the reduction of filter penalties caused by the narrowing of an optical signal band due to optical filters with multiplexing and demultiplexing functions. The solution involves a system where transponder units connected by optical fibers utilize a transmission unit that modulates laser light with an electric signal. This system also includes a reception unit that converts the received optical signal back into an electric signal, incorporating a BER measurement unit to optimize performance.
Another notable patent is related to an optical amplifier, optical transmission system, and a method for measuring faults in optical cables. This invention allows for the easy detection of faults in long-distance optical cables using low-cost equipment. The configuration includes an isolator near an optical amplifier to enhance performance and stability, facilitating the measurement of submarine cable faults.
Career Highlights
Kotanigawa is currently employed at Nippon Telegraph and Telephone Corporation, where he continues to innovate in the field of optical communications. His work has been instrumental in advancing technologies that enhance the performance of optical transmission systems.
Collaborations
Throughout his career, Kotanigawa has collaborated with notable colleagues, including Kei Kitamura and Takafumi Hamano. These collaborations have contributed to the development of cutting-edge technologies in optical transmission.
Conclusion
Takashi Kotanigawa's contributions to optical transmission technology have significantly impacted the field. His innovative patents and ongoing work at Nippon Telegraph and Telephone Corporation highlight his dedication to advancing communication technologies.
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