Michikazu Kondo

Title: Michikazu Kondo: Innovator in Optical Technology

Introduction

Michikazu Kondo is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of optical technology, holding a total of 5 patents. His innovative work has paved the way for advancements in optical switching systems and devices.

Latest Patents

One of Kondo's latest patents is an optical switch of switched directional coupler type. This optical switch utilizes switched optical directional couplers, which can be activated by applying either 0 volts or a voltage V.sub.1, which is different from 0 volts. When the V.sub.1 voltage is applied to a selected directional coupler, almost 100% coupling is achieved, while applying 0 volts results in coupling of 0% to 20%. The optical directional coupler is designed by placing adjacent optical waveguides in close proximity and applying electric field-producing electrodes to these waveguides, ensuring that the substrate below receives electric fields of opposite directions.

Another notable patent is an optical time-division switching system employing optical bistable devices. In this system, time-division multiplexed calling and called station signals are organized in incoming time slots and transmitted through a common optical medium to a first optical switching circuit. This circuit switches the signals to optical bistable devices, where they are stored as binary 1's or 0's. A second optical switching circuit is then used to read the stored signals and rearrange them for outgoing time slots, which are subsequently distributed to the calling and called stations through a time-division demultiplexer.

Career Highlights

Kondo has worked with notable companies such as Nippon Electric Co., Ltd. and NEC Corporation. His experience in these organizations has contributed to his expertise in optical technologies and innovations.

Collaborations

Throughout his career, Kondo has collaborated with esteemed colleagues, including Kunio Nagashima and Yoshinori Ohta. These partnerships have further enhanced his contributions to the field.

Conclusion

Michikazu Kondo's work in optical technology exemplifies innovation and creativity. His patents reflect a deep understanding of optical systems and their applications, making him a significant figure in the industry.