Title: Integrated Si Photonics and Optoelectronics for High-Speed Optical Interconnects

Time: 1:20 PM, 04/1

Place: NCTS (Lecture Room A, 4F, 3rd General Building). 

Speaker: Prof. Ming Chang Lee (Institute of Photonics Technologies, NTHU)

Abstract:

Integrated Si optoelectronics and photonics are the key technology platform for developing large-scale integrated optics for high-speed optical interconnects. For example, multi-channel integrated Si/Ge transceivers are recently demonstrated for over 100Gbps data transmission aiming at data centers, high-performance cluster computers, and cloud servers. Meanwhile, these technologies are also exploited for implementing compact sensor chips for biological and chemical detection. In this talk, I will introduce several key Si photonic components developed in my group and fabricated in a CMOS research lab in Taiwan. One of the unique processes called rapid melt growth (RMG) method is introduced for monolithically integrating various monocrystalline semiconductors on Si substrate. This process doesn’t require complex epitaxy process steps to deal with the lattice mismatch issue between different semiconductors, and the thermal budget is small, which is most compatible with standard CMOS process. Several devices are presented, including Si/Ge heterojunction waveguide pin, Si/Ge butt-coupling waveguide photodetectors and ultralow-voltage Si/Ge avalanche photodiodes.