"Integrating photonic circuits on conventional electronic chips would enable faster data transfer and lower energy consumption without raising the chip’s temperature, which could make it particularly useful for data-intensive applications like machine learning."
I don't think the win here will be speed, particularly chip level as much as enabling lower power and higher throughout architectures at the system level. As in this is mote likely to be used for medium range links where infiniband/pcie/nvlink are used today.