An apparatus includes a photonic integrated circuit having an optical phased array. The optical phased array includes multiple unit cells, where each unit cell includes an antenna element configured to transmit or receive optical signals. The unit cells are grouped into multiple supercells, and each supercell includes multiple unit cells. The apparatus also includes multiple arms configured to modify the optical signals transmitted or received by the optical phased array. Different ones of the arms are controllable to support transmission or reception of different optical signals in different directions.