Location History:
- Yokohama, JP (2004 - 2005)
- Tokyo, JP (2005)
Company Filing History:
2 out of 134 
1 out of 832,761 Years Active: 2004-2005
Title: Atsuhiro Yamamoto: Innovator in Optical Technology
Introduction
Atsuhiro Yamamoto is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of optical technology, holding a total of 3 patents. His work primarily focuses on improving the performance and stability of semiconductor laser devices.
Latest Patents
Yamamoto's latest patents include innovative solutions for optical transmitter modules. One of his inventions aims to reduce the temperature dependence of an etalon used as a wavelength locker for semiconductor laser devices. This invention specifically addresses the issue of wavelength locking performance degradation due to temperature variations. The solution involves the use of an air gap etalon, which consists of a media plate and parallel plane plates on both sides, creating a stable environment for wavelength locking.
Another notable patent is an optical module designed for detecting multiple wavelengths by utilizing the selectivity of an etalon. This optical module features a semiconductor laser, a lens to convert the emitted beam into a parallel beam, and a beam splitter to divide the beam into reflected and transmitted components. A light-receiving element is strategically placed to ensure that one of the split beams interacts with the etalon, enhancing the detection capabilities of the system.
Career Highlights
Throughout his career, Atsuhiro Yamamoto has worked with various companies, including Opnext Japan, Inc. His experience in the industry has allowed him to develop cutting-edge technologies that have advanced the field of optical communications.
Collaborations
Yamamoto has collaborated with notable professionals in his field, including Katsumi Kuroguchi and Hiroaki Furuichi. These collaborations have contributed to the successful development of his innovative patents.
Conclusion
Atsuhiro Yamamoto is a distinguished inventor whose work in optical technology has led to significant advancements in semiconductor laser devices. His innovative patents reflect his commitment to enhancing the performance and reliability of optical systems.