Yasuo Ishino

Title: Yasuo Ishino: Innovator in Submarine Optical-Fiber Cable Technology

Introduction

Yasuo Ishino is a notable inventor based in Mito, Japan. He has made significant contributions to the field of optical-fiber technology, particularly in the development of submarine cables. His innovative designs have enhanced the capabilities of underwater communication systems.

Latest Patents

Yasuo Ishino holds a patent for a submarine optical-fiber cable that features a central metal wire and a slotted rod surrounding the wires. This cable includes an absorbent sheath, strength members helically wound around the sheath, a metal jacket, and a plastic sheath. The slotted rod is designed with peripheral helical slots that can accommodate optical fibers or ribbons. Each optical fiber is engineered to have a tensile strain ranging from about 0.015 to 0.3% along its axis. The absorbent sheath is specifically designed to absorb water, making the cable suitable for deep-sea operations, cable laying, recovery, and quick repairs. The modulated strain distribution in the optical fibers effectively suppresses stimulated Brillouin scattering.

Career Highlights

Throughout his career, Yasuo Ishino has worked with prominent companies such as Nippon Telegraph and Telephone Corporation and Ocean Cable Co., Ltd. His work has been instrumental in advancing submarine communication technologies.

Collaborations

Yasuo Ishino has collaborated with notable individuals in the field, including Nobuyuki Yoshizawa and Tadatoshi Tanifuji. Their combined expertise has contributed to the success of various projects in optical-fiber technology.

Conclusion

Yasuo Ishino's innovative work in submarine optical-fiber cables has significantly impacted underwater communication systems. His patents and collaborations reflect his dedication to advancing technology in this critical field.