|Affiliation||Department of Electrical and Electronic Information Engineering|
|Fields of Research||Semiconductor Devices, Silicon Photonics|
|Degree||Ph.D. (Hokkaido University)|
|Academic Societies||Japan Society of Applied Physics, IEEE, SPIE, MRS, ECS|
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|
Silicon photonics is a technology to integrate ultrasmall photonic devices on a Si chip using LSI processes. Such integrated photonic devices are strongly required for low-power and high-capacity information transmission. High-preformance active photonic devices operating at the near-infrared communication wavelengths (1.3-1.6 µm) are integrated on a Si chip with passive photonic devices such as optical waveguides and optical filters. Based on state-of-the-art SiGe epitaxial growth technology, novel photonic devices using group-IV epitaxial layers on Si are proposed and realized.
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.
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
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