Location History:
- Kanagawa, JP (1990)
- Miura, JP (1999)
Company Filing History:
Years Active: 1990-1999
Title: **The Innovative Contributions of Katsushi Iwashita**
Introduction
Katsushi Iwashita is a notable inventor located in Kanagawa, Japan, recognized for his contributions to optical engineering. With a focus on advancing communication technologies, Iwashita holds two significant patents that highlight his inventive prowess and commitment to innovation.
Latest Patents
Iwashita's latest patents include an AM/FM converter and an optical signal transmission system. The AM/FM converter integrates an optical frequency modulation section, which takes multi-channel AM video signals to produce an optical-frequency-modulated signal beam. This invention comprises an optical heterodyne detection section with a semiconductor local laser that generates a local oscillator beam separated by a designated intermediate frequency. The system significantly enhances the frequency band of the AM/FM converter, offering improved performance for communication applications.
The second patent, a device for measuring optical frequency modulation characteristics, utilizes a Mach-Zehnder interferometer to eliminate amplitude modulation from the input light. Two photodetectors are strategically employed to collect outputs from the interferometer's arms, which are then summed. A controlled heater adjusts the path length difference while another controller regulates it based on the output components present, effectively determining the frequency modulation characteristics.
Career Highlights
Katsushi Iwashita is affiliated with Nippon Telegraph and Telephone Corporation, a prominent telecommunications company in Japan. His role within the company underscores his commitment to research and development in optical technologies, thereby making substantial contributions to the field. His innovative spirit and technical acumen have earned him recognition among industry professionals.
Collaborations
Throughout his career, Iwashita has collaborated with esteemed colleagues such as Koji Kikushima and Nori Shibata. These partnerships have facilitated a dynamic exchange of ideas and expertise, enhancing the scope and impact of their collective work in optical engineering and telecommunications.
Conclusion
Katsushi Iwashita's innovative patents reflect his significant contributions to the field of optical technologies. His work not only showcases his inventiveness but also his dedication to advancing communication systems. As technology continues to evolve, Iwashita's inventions will undoubtedly play a critical role in shaping the future of optical signal transmission and modulation.