This inventor holds 41 USPTO granted patents and 8 published patent applications and 9 EPO patents, primarily in Optical Waveguide Technology. Top assignees: Nippon Telegraph and Telephone Corporation, Ntt Electronics Corporation, Olympus Corporation. Active years: 2003-2025.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Mito, JP (2003)
- Kanagawa, JP (2021)
- Tokyo, JP (2020 - 2022)
- Atsugi, JP (2013 - 2023)
- Musashino, JP (2022 - 2024)
Company Filing History:
41 out of 5,300 
8 out of 164 
2 out of 8,306 
Years Active: 2003-2025
Areas of Expertise:
Title: The Innovative Mind of Ryoichi Kasahara
Introduction
Ryoichi Kasahara, based in Atsugi, Japan, is a remarkable inventor known for his significant contributions to the field of optics. With an impressive portfolio of 39 patents, Kasahara's work primarily focuses on optical amplification and waveguide technology, impacting various applications in communication systems.
Latest Patents
Among his latest innovations, Kasahara developed an optical amplifier that integrates a Raman amplification unit with a parametric amplification unit. This design features a second-order nonlinear element characterized by a periodically poled lithium niobate (PPLN) waveguide. The optical amplifier effectively generates second harmonic lights from a foundational wavelength that is slightly detuned. This approach enhances the efficiency of the parametric amplification unit, ensuring a broader phase matching curve is achieved during the difference frequency generation (DFG) process. Additionally, his invention of an optical waveguide details a manufacturing method involving a substrate, lower cladding layer, core layer, sinking prevention layer, and upper cladding layer. Notably, the sinking prevention layer is constructed from a material that has a higher melting point than that of the lower cladding layer, exemplifying advanced material engineering.
Career Highlights
Ryoichi Kasahara has made substantial advancements in the technology sector during his tenure at notable companies such as Nippon Telegraph and Telephone Corporation and NTT Electronics Corporation. His experiences at these organizations have likely played a crucial role in his innovative ability and the conception of his patents.
Collaborations
Throughout his career, Kasahara has collaborated with talented individuals such as Takahiro Kashiwazaki and Takeshi Umeki. Together, they have contributed significantly to the development of optical technologies, paving the way for advancements in various applications.
Conclusion
Ryoichi Kasahara's inventive spirit and technical expertise have led to groundbreaking advancements in optical technology. His 39 patents reflect his dedication to innovation and the continuous pursuit of excellence in the field. As he continues to develop new solutions, Kasahara undoubtedly remains a pivotal figure in advancing optical applications in modern technology.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile