Characterization of a photonic active integrated antenna using a direct off-air transmission technique
This article presents a characterization study of a state-of-the-art 40GHz mode-locked laser using a hybrid integrated microstrip patch antenna and bias-T circuit. A passive mode-locking range of 300MHz is measured using this technique by tuning the gain and saturable absorber bias values for a maximum wireless distance of 15cm. The passive mode-locking signal is detected by a direct off-air method from a photonic active integrated antenna. This signal can be used as a remote local oscillator to downconvert incoming signals as part of a bidirectional system for in-building/campus wide remote antenna units in next generation millimetre-wave radio-over-fibre systems.
millimetre-wave radio-over-fibre (rof) system photonic active integrated antenna (phaia) mode-locked laser (mll) remote antenna units (rau) passive mode-locking (pml)