Photonic Integrated Circuits (PICs) are advanced integrated circuits that combine various photonic components, such as lasers, modulators, detectors, waveguides, and other optical elements, onto a single chip or substrate. Photonic ICs use photons (light) to transmit and process information, in contrast to traditional electronic integrated circuits that use electrons. https://www.transparencymarketresearch.com/photonic-integrated-circuit.html