Location History:
- Musashino, JP (2015)
- Tokyo, JP (2000 - 2022)
Company Filing History:
3 out of 1,325 
2 out of 389 
2 out of 5,289 
Years Active: 2000-2025
Title: Innovations of Yoshihiro Kumagai
Introduction
Yoshihiro Kumagai is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of optical fiber technology. With a total of 6 patents to his name, his work has advanced the understanding and measurement of optical fiber characteristics.
Latest Patents
Kumagai's latest patents include an optical fiber characteristic measurement device, an optical fiber characteristic measurement program, and an optical fiber characteristic measurement method. The optical fiber characteristic measurement device features a light detector that detects Brillouin scattered light obtained by causing light to be incident on an optical fiber. The signal processor in this device obtains two Brillouin gain spectra based on different spectral widths of the incident light. Additionally, the measurer assesses the characteristics of the optical fiber using these spectra. His optical fiber characteristics measurement apparatus includes a laser beam output, an incident part for continuous and pulsed light, and a light detector that outputs a detection signal. This apparatus is designed to measure scattering light based on integrated values acquired over time.
Career Highlights
Kumagai has worked with notable companies such as Yokogawa Electric Corporation and Ando Electric Company. His experience in these organizations has contributed to his expertise in optical fiber technology and measurement.
Collaborations
Some of his coworkers include Rikihiro Iida and Akio Ichikawa. Their collaboration has likely fostered innovation and development in their respective fields.
Conclusion
Yoshihiro Kumagai's contributions to optical fiber technology through his patents and career experiences highlight his role as a significant inventor in this domain. His work continues to influence advancements in optical fiber measurement techniques.
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