Location History:
- Oyama, JP (1997)
- Sapporo, JP (2002)
Company Filing History:
Years Active: 1997-2002
Title: Hiroshi Kuwahara: Innovator in Optical Transmission Technology
Introduction
Hiroshi Kuwahara is a prominent inventor based in Sapporo, Japan. He has made significant contributions to the field of optical transmission technology. With a total of 2 patents, Kuwahara's work focuses on enhancing the efficiency and functionality of optical systems.
Latest Patents
Kuwahara's latest patents include an "Optical transmission apparatus for multiple wavelengths" and an "Optical transmission wavelength control method." The optical transmission apparatus comprises a light source, a temperature control section for regulating the light source's temperature, and both an automatic temperature control (ATC) loop and a wavelength control (AFC) loop. The ATC loop ensures that the optical output wavelengths of the light source remain within a specific range, while the AFC loop utilizes a wavelength detection filter to stabilize the output at a target wavelength. Additionally, his circuit for varying read timing changes the timing for data reading by adjusting the bias potential applied to a clock signal. This innovation includes a comparator that generates an internal clock signal in synchronization with the input data.
Career Highlights
Kuwahara is currently employed at Fujitsu Corporation, where he continues to develop cutting-edge technologies in optical transmission. His work has been instrumental in advancing the capabilities of optical communication systems.
Collaborations
Kuwahara has collaborated with notable colleagues, including Norio Nagase and Setsuo Misaizu, contributing to various projects that enhance optical technology.
Conclusion
Hiroshi Kuwahara's innovative work in optical transmission technology has positioned him as a key figure in the field. His patents reflect a commitment to improving optical systems, and his contributions continue to influence advancements in technology.