Masayuki Shirane

Title: Masayuki Shirane: Innovator in Infrared Detection and Optical Switching

Introduction

Masayuki Shirane is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the fields of infrared detection and optical switching. With a total of 5 patents to his name, Shirane continues to push the boundaries of technology through his innovative designs.

Latest Patents

Shirane's latest patents include an advanced infrared detector. This device features a semiconductor substrate, a first contact layer, a light-absorbing layer, a second contact layer, and a voltage source that applies voltage between the first and second contact layers. The light-absorbing layer is composed of multiple stacked components, including a first intermediate layer, a quantum dot layer, a second intermediate layer, a current block layer, a third intermediate layer, and an electron-doped layer. Notably, the energy at the bottom of the conduction band in the current block layer is greater than that in the intermediate layer, and the thickness of the first intermediate layer exceeds that of the third intermediate layer.

Another significant invention is an optical switch featuring a photonic crystal structure. This optical switch incorporates a slab optical waveguide structure with a two-dimensional photonic crystal core. The design alternates and regularly arranges two or more media with different refractive indices. The photonic crystal structure includes a line-defect waveguide and mechanisms for altering the refractive index of the line-defect waveguide.

Career Highlights

Masayuki Shirane is currently employed at NEC Corporation, where he continues to develop cutting-edge technologies. His work has garnered attention for its innovative approach to solving complex problems in the field of optics and detection.

Collaborations

Shirane has collaborated with notable colleagues, including Masatoshi Tokushima and Yuichi Igarashi. These partnerships have contributed to the advancement of his research and the successful development of his patents.

Conclusion

Masayuki Shirane is a key figure in the realm of technological innovation, particularly in infrared detection and optical switching. His contributions through patents and collaborations highlight his commitment to advancing technology.