学术报告:A Heterogeneous III/V-Si Integration Platform for Silicon Photonics
报告题目:A Heterogeneous III/V-Si Integration Platform for Silicon Photonics
Integration of III-V components on Si substrates is required for realizing the promise of Silicon Photonic systems. Specifically, the direct bandgap of many III-V materials is required for light sources, efficient modulators and photodetectors. Several different approaches have been taken to integrate III-V lasers into the silicon photonic platform, such as wafer bonding, direct growth, butt coupling, etc.
Here, we have devised a novel laser design and integration platform that overcomes the above limitations. In our approach, we use InAs quantum dot (QD) lasers monolithically integrated with silicon waveguides and other Si photonic passive components by Pd-GaAs wafer bonding as well as direct growth technology. Due to their unique structures, the QD lasers have been proven by several groups to have the combination of high temperature stability, large modulation bandwidth and low power consumption compared with their quantum well counterparts, which makes it an ideal candidate for Si photonic applications. By using our platform, several bonded laser such as ridge waveguide lasers, comb lasers, mode-locked lasers and direct growth lasers such as micro-disk lasers, micro-pillar lasers were achieved. The integration of these lasers on Silicon using both wafer bonding and direct growth provide a promising approach to monolithically integrate the laser source with silicon photonic integrated circuits.
Zihao Wang received his B.S. degree in Opto-electronics from Huazhong University of Science and Technology (HUST) in 2012. Then he joined Microsystems Engineering PhD program at Rochester Institute of Technology and focused on integrated InAs quantum dot (QD) Laser for Silicon Photonic Optical Transceiver. After he graduated in 2018, he joined Irixi photonics Inc. working on hybrid photonics integrated circuits (PICs) for high speed optical transceiver. At beginning of this year, he become an associate professor at the Institute of physics, CAS and research on monolithically integration of QD laser for silicon photonics by using direct growth technology.