Time-dependent optical delay lines/ dynamic modulation integrated onto silicon-based photonic chips avoids electronic memory problems

https://www.eurekalert.org/news-releases/1137512

"temporally plastic, foundry-compatible, real-time photonic neural network incorporating time-dependent optical operators: silicon nitride/ silicon-on-insulator with micro-transfer-printed semiconductor optical amplifiers... stable reconfigurable optical kernel, dynamic pulse-level electro-optic modulation, recursive optical delay line update weights... slashes: compute latency 100X, energy consumption 16X, order-of-magnitude reduction in trajectory prediction error for autonomous navigation"