豊橋技術科学大学

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Ishkawa, Yasuhiko

Affiliation Department of Electrical and Electronic Information Engineering
Title Professor
Fields of Research Semiconductor Devices, Silicon Photonics
Degree Ph.D. (Hokkaido University)
Academic Societies Japan Society of Applied Physics, IEEE, SPIE, MRS, ECS
E-mail ishikawa@ee
Please append ".tut.ac.jp" to the end of the address above.
Laboratory website URL http://www.int.ee.tut.ac.jp/photon/
Researcher information URL(researchmap) Researcher information

Research

情報通信の一層の低電力化・大容量化に必須となる集積光デバイスの実現を目指して、シリコンLSIプロセスを利用した微細光デバイス作製技術「シリコンフォトニクス」の研究を行っています。従来のディスクリート光デバイスに匹敵する高性能な近赤外受発光デバイスを、パッシブ光デバイス(微小光導波路や合分波器など)と一体化してシリコンチップ上へ集積する研究を進めています。世界最高水準のシリコンゲルマニウムエピタキシャル成長技術に基づき、IV族半導体薄膜による光機能の開拓を行い、従来にないシリコン上光デバイスの提案、プロセス技術開発とデバイス作製、ならびにデバイスの動作実証を一貫して行っています。システムとしてのプロトタイプ化を産官学との共同研究により推進するとともに、高度計測技術としての展開を図ります。

Theme1:Si-based Waveguides

Overview

Si/Si nitride waveguides enable light propagation on a Si chip for high-capacity optical communications (wavelength: 1.3 - 1.6 µm) as well as optical interconnections in high-performance LSIs such as AI chips. Photonic integration chips are fabricated on standard bulk Si wafers as well as SOI (Si-on-insulator) wafers.

Theme2:Ge-on-Si Photodetectors

Overview

Photodetectors are inevitably necessary to convert optical signals to electrical ones for the processing with LSIs. Ge, a group-IV semiconductor similar to Si, has a good compatibility with Si processing technology. Integrated photodetectors of high-quality Ge epitaxial layer have been realized.

Theme3:Novel Ge-on-Si Devices

Overview

Ge is an indirect bandgap semiconductor, while theoretical investigations have shown that excellent optical properties, similar to direct semiconductors, can be obtained applying the band engineering. Novel photonic devices are under investigations such as optical intensity/phase modulators and light emitters (particularly, lasers).

Title of class

Analytical Electromagnetism II
Electromagnetic Wave Engineering
Engineering and Science Laboratory
Quantum Optoelectronics


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