Eiji Ohue

Title: Eiji Ohue: Innovator in Optical Technology

Introduction

Eiji Ohue, an accomplished inventor based in Ome, Japan, is recognized for his significant contributions to optical technology, with a total of four patents to his name. His work primarily focuses on advancements in optical receivers and bipolar transistors, demonstrating his expertise and innovation in the field.

Latest Patents

Among his notable inventions, two patents stand out:

1. **Optical receiver using variable negative-capacitance circuit** - This invention addresses the issue of large time constants caused by parasitic capacitance at the anode terminal of photodetectors in optical receivers. Ohue's design incorporates a variable negative capacitor, predominantly utilizing a high-speed NPN-type transistor. This configuration effectively minimizes the parasitic capacitance associated with the photodetector and compensates for manufacturing variances, enhancing the overall performance of the optical receiver.

2. **Bipolar transistor and manufacturing method thereof** - Eiji Ohue's bipolar transistor design features an innovative structure where an intrinsic base is crafted from single crystal silicon-germanium (Si-Ge). The design reduces resistance between the intrinsic base and the base leading-out electrode, while also minimizing capacitance between the collector and the base. This self-aligned bipolar transistor facilitates low power consumption and supports high-speed operation, marking a significant advancement in transistor technology.

Career Highlights

Eiji Ohue's professional journey includes valuable experience with notable companies such as Hitachi, Ltd. His tenure at these organizations has allowed him to refine his skills and contribute to groundbreaking advancements in his field.

Collaborations

Throughout his career, Ohue has collaborated with esteemed colleagues, including Katsuyoshi Washio and Katsuya Oda. These partnerships have fostered a creative environment that has led to successful innovations and enhanced the field of optical technology.

Conclusion

Eiji Ohue remains a prominent figure in the realm of optical technology, with his patented inventions paving the way for future innovations. His work continues to inspire new developments in the industry, reflecting his commitment to advancing technology and improving performance standards.