This inventor holds 17 USPTO granted patents, plus 1 CIPO patent and 3 EPO patents, primarily in Optical Technologies. Top assignees: Nippon Telegraph and Telephone Corporation, Japan Science and Technology Agency, Ando Electric Company. Active years: 1992-2019.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Ibaraki, JP (1992)
- Mito, JP (1993 - 2003)
- Tokyo, JP (2000 - 2004)
- Sendai, JP (2008 - 2019)
Company Filing History:
11 out of 5,300 
4 out of 1,329 
2 out of 389 
Years Active: 1992-2019
Areas of Expertise:
Title: Masataka Nakazawa - Innovations in Semiconductor Laser Technology
Introduction
Masataka Nakazawa, an accomplished inventor based in Sendai, Japan, holds a remarkable portfolio of 17 patents. His innovative contributions primarily focus on semiconductor laser devices and optical transmission technologies, showcasing his expertise in the field.
Latest Patents
Among Nakazawa's recent patents is a groundbreaking semiconductor laser device that addresses challenges in forming uniform resonators within long DFB laser configurations. This invention emphasizes a design where a semiconductor laser, oscillating in a single mode, is integrated with a low-loss lightwave circuit made from SiOglass. The setup allows output light to be efficiently reflected back to the semiconductor laser, resulting in a compact device characterized by a narrowed spectral linewidth and stable wavelength controllability.
Another notable patent from Nakazawa is centered on an optical transmission method and apparatus. This invention compensates for waveform distortion during optical pulse transmission through optical fibers. Utilizing an optical Fourier transformer, the system converts the pulse from a time-axis to a frequency-axis, effectively maintaining the frequency spectrum. This innovative approach allows for the recovery of pulse waveforms before transmission, enhancing the overall performance of optical communication systems.
Career Highlights
Throughout his career, Masataka Nakazawa has made significant contributions while working with prestigious organizations such as Nippon Telegraph and Telephone Corporation and the Japan Science and Technology Agency. His innovative research and relentless pursuit of excellence have solidified his reputation as a leader in semiconductor laser technology.
Collaborations
During his journey, Nakazawa has collaborated with esteemed colleagues Eiji Yoshida and Toshihiko Hirooka. Together, they have contributed to the advancement of technology in optical communications, pushing the boundaries of what is possible in their field.
Conclusion
Masataka Nakazawa's achievements in the realm of semiconductor lasers and optical transmission systems reflect his dedication to innovation. With a strong portfolio of patents and significant collaborations, he continues to impact the field, driving forward technological advancements that enhance communication and optical technologies.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile