Tadasu Ishikawa

Title: Tadasu Ishikawa: Innovator in Electric Field Sensing Technology

Introduction

Tadasu Ishikawa is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of electric field sensing technology, holding a total of 3 patents. His innovative work has paved the way for advancements in optical transmission and reception systems.

Latest Patents

One of Ishikawa's latest patents is an electric field sensor that comprises an electric field sensor head designed to vary the intensity of a propagating light beam in response to the electric field intensity of an input signal received by a reception antenna. This sensor head includes an incident optical waveguide, two phase-shift optical waveguides with a variable refractive index, an outgoing optical waveguide, and at least one modulation electrode. The modulation electrode is strategically placed near the phase-shift optical waveguides and has a thickness of no less than 1 micrometer. Additionally, the electric field sensor features a circuit element connected between the modulation electrode and the reception antenna, which is preferably a low radiation resistance antenna.

Another notable patent involves an optical transmission and reception module that consists of two optical waveguide chips, each with a ceramic substrate and a cover. These chips are designed with V grooves and guide grooves to securely hold optical fibers. The end faces of the chips are inclined to facilitate the propagation of light through the optical fibers, ensuring efficient optical transmission.

Career Highlights

Throughout his career, Tadasu Ishikawa has worked with notable companies such as Nippon Hoso Kyokai and Tokin Corporation. His experience in these organizations has contributed to his expertise in optical technologies and electric field sensing.

Collaborations

Ishikawa has collaborated with esteemed colleagues, including Mikio Maeda and Kimiyuki Oyamada. Their joint efforts have further advanced the field of electric field sensing and optical technologies.

Conclusion

Tadasu Ishikawa's innovative contributions to electric field sensing technology and his collaborations with industry professionals highlight his significant role in advancing optical technologies. His work continues to influence the field and inspire future innovations.