Koji Ebihara

Title: Koji Ebihara: Innovator in Semiconductor Technology

Introduction

Koji Ebihara is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 3 patents. His work focuses on innovative designs that enhance the functionality and efficiency of optical semiconductor devices.

Latest Patents

One of his latest patents is for a semiconductor light receiving element with a mesa type photodiode structure. This invention includes a first semiconductor layer, a waveguide type photodiode structure, an optical waveguide structure, and a fourth semiconductor layer. The waveguide type photodiode structure is provided on the first semiconductor layer and consists of an optical absorption layer, a second semiconductor layer, a multiplication layer, and a third semiconductor layer. The optical waveguide structure is also provided on the first semiconductor layer, featuring an optical waveguiding core layer and a cladding layer. The fourth semiconductor layer is strategically positioned between the end faces of the waveguide type photodiode structure and the optical waveguide structure, enhancing the device's performance.

Another notable patent is for an optical semiconductor device that comprises a semiconductor substrate, an optical 90-degree hybrid circuit, and multiple input and output optical waveguides. The input optical waveguides are optically coupled to the hybrid circuit, while the output optical waveguides are connected to the output ends. Each input optical waveguide features a first curving portion and a straight portion, while the output waveguides include a second curving portion that follows a raised sine curve.

Career Highlights

Koji Ebihara has worked with reputable companies such as Sumitomo Electric Device Innovations, Inc. and Sumitomo Electric Industries, Limited. His experience in these organizations has allowed him to develop and refine his innovative ideas in semiconductor technology.

Collaborations

Throughout his career, Koji has collaborated with talented individuals, including Takuya Okimoto and Yoshihiro Yoneda. These collaborations have contributed to the advancement of his projects and the successful development of his patents.

Conclusion

Koji Ebihara is a distinguished inventor whose work in semiconductor technology has led to several innovative patents. His contributions continue to influence the field and pave the way for future advancements in optical devices.