Location History:
- Hadano, JP (1992)
- Kanagawa, JP (1993)
- Kawasaki, JP (2000)
Company Filing History:
Years Active: 1992-2000
Title: Hisashi Hamaguchi: Innovator in Optical Semiconductor Devices
Introduction
Hisashi Hamaguchi is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of optical semiconductor devices, holding a total of 3 patents. His work focuses on enhancing transmission speed and distance in optical communications.
Latest Patents
Hamaguchi's latest patents include a modulator integrated distributed feed-back laser diode module and device. This optical semiconductor device circuit is designed to minimize the extension in the wavelength of the output light, thereby improving transmission speed and distance. The circuit comprises a semiconductor laser diode, an optical modulator, a resistive element, a common connection substrate, and an impedance element or signal reflection element.
Another notable patent is a method of producing a semiconductor device that includes a light receiving element. This device features a substrate, multiple layers of semiconductor materials, and a plurality of pin diodes. The design allows for efficient operation as a pin photodiode, enhancing the functionality of the semiconductor device.
Career Highlights
Hamaguchi is currently employed at Fujitsu Corporation, where he continues to innovate in the field of optical devices. His work has been instrumental in advancing technology in optical communications and semiconductor devices.
Collaborations
Some of his notable coworkers include Masao Makiuchi and Hiromitsu Kawamura. Their collaborative efforts contribute to the ongoing advancements in their respective fields.
Conclusion
Hisashi Hamaguchi's contributions to optical semiconductor technology have made a significant impact on the industry. His innovative patents and work at Fujitsu Corporation highlight his role as a leading inventor in this field.