Short-reach, low-cost silicon photonic micro-transceivers for embedded and co-packaged system integration

We report on the design and performance of a silicon photonic micro-transceiver required to operate in high ambient temperature environments above 105°C. The four channel “I/O core” micro-transceiver incorporates a 1310 nm Quantum Dot laser system and operates at a data-rate of 32 Gbps per lane. The 5mm x 5mm micro-transceiver chip benefits from a multimode coupling interface for low-cost assembly and robust connectivity at high temperatures and an optical redundancy circuit, increasing reliability by over an order of magnitude. I/O core is a photonic building block used to construct more complex application-customized modules such as 512 Gb/s modules for HPC, 5G and AI systems.