A Silicon Photonic Chip for Simultaneous Microwave and Near-Infrared Dual-Band Beamforming

Le résumé fourni par la source

This study proposes and experimentally demonstrates the world’s first monolithically integrated silicon photonic chip capable of simultaneous microwave and near-infrared dual-band beamforming. The chip integrates a microwave beamforming network and an optical phased array (OPA) system to combine the high connection reliability of microwave band with the large bandwidth advantage of the near-infrared band. The microwave beamforming network employs four 3-bit optical switch delay line (OSDLs) structure with four integrated photodiodes (PDs), while the OPA utilizes sixteen-channel thermo-optic phase shifters coupled with integrated waveguide grating antennas. The experimental results demonstrate that the chip achieves two-dimensional dynamic beam steering, with a microwave beam scanning range of 22.7°×27.4° and an optical beam scanning range of 10°×4.7°.

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