Abstract: A programmable optical chip and a terminal is provided, wherein the optical chip includes: one or more first transmission paths for transmitting an optical signal in the programmable optical chip; first programmable basic devices arranged in an array; and optical IP cores, wherein the optical IP cores and the first programmable basic devices are optically coupled, and the optical IP cores are optically coupled. The optical IP cores include optical soft cores and/or optical firm cores. Each type of optical soft core includes second programmable basic devices and one or more second transmission paths for transmitting the optical signal in the optical soft core. Each type of optical firm core includes third programmable basic devices, one or more third transmission paths for transmitting the optical signal in the optical firm core, and first optical devices used to process the optical signal.

Abstract: The application relates to radars, and provides a chip with a beamforming network based on a photonic crystal resonant cavity tree structure and a fabrication method thereof. The chip includes a beamforming network layer, including an incidence coupling grating, first to Nth photonic crystal resonant cavity combinations, first to (N+1)th optical waveguides and an emergence coupling grating which are successively connected; branches of each photonic crystal resonant cavity combination is an integral multiple of that of the previous photonic crystal resonant cavity combination, and two photonic crystal resonant cavity combinations are connected by an optical waveguide.

Abstract: The application relates to radars, and provides a chip with a beamforming network based on a photonic crystal resonant cavity tree structure and a fabrication method thereof. The chip includes a beamforming network layer, including an incidence coupling grating, first to Nth photonic crystal resonant cavity combinations, first to (N+1)th optical waveguides and an emergence coupling grating which are successively connected; branches of each photonic crystal resonant cavity combination is an integral multiple of that of the previous photonic crystal resonant cavity combination, and two photonic crystal resonant cavity combinations are connected by an optical waveguide.