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We present a wavelength-dependent optical true time delay (TTD) for K-band radio beamformer targeting home-satellite communication. A proof-of-concept of optically-assisted radio beamformer with a TTD bandwidth of 2GHz is experimentally demonstrated. The beamformer is capable of generating multiple radio beams if multiple wavelengths are employed.
An optical ring resonator (ORR) based 1 × 4 optical beam forming network is reported. The delay response of a ORR was measured and agrees well with the lossless theoretical model. The tuning of a ORR was calibrated and experiments were performed to verify the tuning accuracy.
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