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We present an experimental demonstration of radio beamforming using an optical chip for application in K-band satellite communication. Via coherent combination of four RF channels, close to 12 dB beamforming gain is obtained. As a result, the transmission capacity is enhanced from 8-QAM, 5.81 Gbps to 32-QAM, 9.68 Gbps of multi-carrier data. For 4 channel beamforming, error-free performance (BER<1E-12)...
We demonstrate a novel all-optical system using optical cross-connect and reflective modulator photonic chips to realize bidirectional dynamic indoor wireless networks equipped with localization and tracking functionalities, with over 40 Gb/s data capacity per user.
An optically controlled multi-RF beamformer for targeting more than one satellite is presented. Two beams in K-band of 6 Gbps each are generated by a 2×1 beamformer attached to a wavelength-dependent ring-based optical chip.
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.
In this paper we present the design, realization, and experimental characterization of a photonic integrated true time delay circuit on a CMOS-compatible Si3N4 platform. The true time delay circuit consists of an optical side band filter for single side band modulation and an optical ring resonator for broadband time delay. Two methods of optical delay tuning are investigated: 1) optical wavelength...
A new widely and continuously tunable ring laser contains an integrated series filter with a Vernier pair of Ring Resonators (RR) and a pair of identical Delayed Interferometers (DI). Tuning currents of only a few mA yield tuning ranges of 2000 GHz.
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