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Comprehensive tuning optimization of an integrated optical ring resonator (ORR) based $1\times 4$ optical beam forming network (OBFN) for W-band millimeter wave (mmW) phased arrays is reported. The OBFN chip is implemented using a ultralow loss silicon nitride technology and a two stage binary tree topology. The delay responses of a single- and multiORR delay line were carefully measured, and the...
An optical ring resonator (ORR) based 1 × 4 integrated optical beamforming network (OBFN) targeting mmW is reported. The optimized true time delay response of a 3-ORR delay line with a bandwidth of 8.7 GHz was achieved over tuning range of 172.4 ps, which corresponds to a 31π phase shift for a 90 GHz signal. A 3 Gbps OOK NRZ data signal was transmitted through the delay line to verify the overall...
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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