World's first self-calibrated photonic chip: An interchange for optical data superhighways

 https://phys.org/news/2022-07-world-self-calibrated-photonic-chip-interchange.html

"on-chip reference... components  work as one... address bottleneck internet issues reconfiguring optical internet... searching for patterns... medical diagnosis, autonomous vehicles, internet security, threat identification and search algorithms... self-calibration... integrating optical onto device that could be "plugged in" to existing infrastructure. Our solution is to... calibrate chips after manufacturing, tune using on-chip reference... optical delays  paths through the chip deduced from intensity versus wavelength"