Location History:
- Kanagawa, JP (1993 - 1994)
- Yokosuka, JP (1992 - 2000)
- Tokyo, JP (1999 - 2001)
Company Filing History:
Years Active: 1992-2001
Title: Masatoshi Saruwatari: Innovator in All-Optical Technologies
Introduction
Masatoshi Saruwatari is a prominent inventor based in Yokosuka, Japan. He has made significant contributions to the field of optical technologies, holding a total of 13 patents. His work focuses on advancing the capabilities of all-optical systems, which are crucial for high-speed data transmission.
Latest Patents
Among his latest innovations are the all-optical time-division demultiplexing circuit and the all-optical TDM-WDM conversion circuit. The all-optical time-division demultiplexing circuit is designed to output all channels of time-division multiplexed signal pulses to different output ports simultaneously. This circuit utilizes an optical Kerr medium to provide locally cross-phase modulation to control pulses, depending on the presence of signal pulses in each channel. The optical Kerr medium modulates the power of the control pulses, allowing for effective separation of the signal channels.
The all-optical TDM-WDM converter is another significant invention. It enables simultaneous and spatial separation of optical signal pulse trains from a TDM optical signal pulse train without using a multistage structure. This converter employs a control optical source that generates a control optical pulse train, which is synchronized with the optical signal pulse trains of multiple channels. The resulting frequency-converted optical pulse train is then spatially divided according to each optical frequency.
Career Highlights
Masatoshi Saruwatari is currently associated with Nippon Telegraph and Telephone Corporation, where he continues to push the boundaries of optical technology. His work has been instrumental in developing systems that enhance data transmission efficiency and speed.
Collaborations
He has collaborated with notable colleagues such as Satoki Kawanishi and Hidehiko Takara, contributing to various advancements in the field.
Conclusion
Masatoshi Saruwatari's innovative work in all-optical technologies has positioned him as a key figure in the advancement of optical communication systems. His contributions continue to influence the future of high-speed data transmission.