Masaharu Horiguchi

Title: Masaharu Horiguchi: Innovator in Optical Technologies

Introduction

Masaharu Horiguchi is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of optical technologies, particularly in the development of advanced measurement systems. With a total of 2 patents, Horiguchi's work has had a notable impact on the industry.

Latest Patents

Horiguchi's latest patents include innovations in polarization-independent reflectometry and polarization-independent reflectometers. His first patent describes a method where emitted light from a light source is separated into two parts through an optical fiber coupler. One part enters a measured optical module as measurement light, while the other is delayed using an optical fiber delay line and a reflector. This local light signal is then combined with the reflected light signal from the measured optical module, allowing for interference between the two signals. A polarization controller is utilized to generate beat signals, enabling the measurement of light power regardless of the polarization state.

His second patent focuses on the preparation of a silicon substrate. This substrate is created by furnishing a silicon substrate with a step of at least 5 µm high on one surface. An oxide film is formed through high-pressure heat oxidation, which is then selectively removed to expose the silicon surface in the higher surface region. This innovative approach results in a silicon substrate that boasts excellent electrical properties, minimized warpage, and a well-defined oxide-silicon boundary, making it ideal for optical waveguide devices.

Career Highlights

Throughout his career, Horiguchi has demonstrated a commitment to advancing optical technologies. His innovative patents reflect his expertise and dedication to improving measurement systems.

Collaborations

Horiguchi has collaborated with notable colleagues, including Yasushi Maeda and Tohru Mori. Their combined efforts have contributed to the success of various projects in the field of optical technologies.

Conclusion

Masaharu Horiguchi is a distinguished inventor whose work in optical technologies has led to significant advancements in measurement systems. His innovative patents and collaborations highlight his contributions to the field, making him a key figure in the industry.