Yasuyuki Nagao

Title: Yasuyuki Nagao: Innovator in Optical Switching and Semiconductor Technology

Introduction

Yasuyuki Nagao is a prominent inventor based in Hasuda, Japan, known for his significant contributions to optical switching circuits and semiconductor light-emitting devices. With a total of 11 patents to his name, Nagao has made remarkable advancements in the field of technology.

Latest Patents

One of his latest patents is a four fiber ring network optical switching circuit using branched inputs. This invention is designed to economically realize the bridge function during span and ring switching through a compact structure. The circuit consists of a 10×8 optical matrix switch with ten input ports and eight output ports, along with two branching elements that allow for the efficient handling of optical signals. Another notable patent is for a semiconductor light-emitting device and method for manufacturing the same. This device features a nanostructure PS layer with controlled thickness, which enhances luminescence efficiency without increasing series resistance. The use of large-diameter silicon wafers as the material for light emission allows for the production of an inexpensive semiconductor light-emitting device with a large emitting area.

Career Highlights

Throughout his career, Yasuyuki Nagao has worked with notable companies such as Kokusai Denshin Denwa Kabushiki Kaisha and KDD Corporation. His experience in these organizations has contributed to his expertise in optical and semiconductor technologies.

Collaborations

Nagao has collaborated with esteemed colleagues, including Kohsuke Nishimura and Kazuo Sakai, further enhancing his innovative work in the field.

Conclusion

Yasuyuki Nagao's contributions to optical switching and semiconductor technology have established him as a key figure in the industry. His innovative patents and collaborations reflect his commitment to advancing technology and improving efficiency in electronic devices.