Company Filing History:
Years Active: 2003-2008
Title: Innovations of Yuichi Kawahata
Introduction
Yuichi Kawahata is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of optical technology, particularly in the area of wavelength dispersion compensation. With a total of 11 patents to his name, Kawahata's work has had a substantial impact on the industry.
Latest Patents
Kawahata's latest patents include a control method of a wavelength dispersion compensator and a chromatic dispersion compensation device and method. The control method aims to reduce wavelength dependence of dispersion values and suppress changes in wavelength transmission characteristics due to temperature variations. This innovative VIPA-type wavelength dispersion compensator features a VIPA plate that emits incident lights in different directions based on their wavelengths, along with a free-form surface mirror that reflects these lights back to the VIPA plate. The device also includes a heater and a temperature sensor to optimize performance based on environmental conditions. The chromatic dispersion compensator allows for easy adjustment of dispersion and group delay time, enhancing the efficiency of optical systems.
Career Highlights
Kawahata is currently employed at Fujitsu Corporation, where he continues to develop cutting-edge technologies. His work has been instrumental in advancing optical communication systems, making them more efficient and reliable.
Collaborations
Kawahata has collaborated with notable colleagues such as Nobuaki Mitamura and Hirotomo Izumi. Their combined expertise has contributed to the success of various projects and innovations in the field.
Conclusion
Yuichi Kawahata's contributions to optical technology through his patents and collaborations highlight his role as a leading inventor in the industry. His innovative approaches to wavelength dispersion compensation continue to influence advancements in optical communication systems.
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