报告题目：Monolithic and Heterogeneous Integration of III-V Lasers on Silicon
Abstract: By leveraging the 200mm or 300mm CMOS fabrication infrastructure, silicon photonics promises the manufacturing of compact and high-density photonic integrated circuits with capability of mass production and hence low cost. In addition, silicon photonics also provides the possibility of co-integration of photonic and electronic circuits that may transform computing system architectures and enable more powerful computers. While high speed
photodetectors and optical modulators based on pure silicon or germanium have been demonstrated, it is still very challenging to realize silicon on-chip amplifiers and lasers, which limits the further evolution of silicon photonics. In this talk, I will review our recent activities on the topic of integrating
III-V lasers on silicon.
Two integration schemes will be covered. The first scheme is based on a unique localized epitaxial growth technique, which enables buffer-less, large-scale integration of high quality InP waveguides on a 300 mm silicon wafer. By leveraging this integration platform, we have demonstrated both pure
InP-based and InP/InGaAs/InP-based distributed feedback (DFB) laser arrays on silicon. On the other hand, adhesive bonding based III-V-on-Si integration platform has been well explored in the past decade, and some of our representative work will be covered, including ultra-dense on-chip optical
comb generator, high speed directly modulated laser, narrow linewidth laser etc.
Bio: Zhechao Wang received the bachelor degree in Optical Engineering and the Ph.D. degree in Applied Physics from Zhejiang University,
China and Royal Institute of Technology, Sweden in 2005 and 2010, respectively. In 2011-2015, he worked as a postdoctoral researcher in Ghent University.
He is currently a researcher of IMEC, Belgium. He has published over 20 refereed papers in international journals, including Nature Photonics, Light: Science & Applications,
Nano Letters, Optics Letters, and Applied Physics Letter etc. His research interests include silicon and III-V photonic integrated devices, mode-locked lasers,
optical frequency comb, nanowire lasers, hetero-epitaxy of III-Vs on silicon, light field imaging etc.