True-time delay beamforming using semiconductor optical amplifier and tunable dispersion medium

摘要

We demonstrated optical phased array antenna based on true-time delay (TTD) beamforming for radio-over-fiber (RoF) using semiconductor optical amplifier (SOA) and tunable dispersion medium. In the case of the full range of beam direction, the required delay time per antenna element was 194 ps. As a result, the full true time delay was obtained by adjusting the dispersion value of the tunable dispersion medium (TDM) from -400 psm to +400 psm. We successfully achieved the high TTD performance for various output beam angles.