It has proven track records of innovative product development from concept to high volume production with specialization in state-of-the-art coherent silicon photonics integrated circuit (Si-PIC) chip optical engine from design, fabrication, processes, integration to verification, digital and analog high speed (>100Gbps) long reach coherent optical transceivers, DSP, SFP+/XFP/QSFP28/QSFP-DD optical transceivers, DFB/FP/VCSEL lasers, APD/PD receivers, passive optical devices including thin film filter, fiber Bragg grating (FBG), DWDM and OADM devices, EDFA, MEMS, LCoS, ROADM, WSS, MCS, precision photonics IC chip engineering, hardware and firmware designs, optical line cards, and DWDM optical system engineering.