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We experimentally demonstrate an all-optical architecture for the linearization of a phase-modulated interferometrically detected microwave photonic link. We couple off a small part of the phase-modulated signal and combine it with a pump lightwave to produce a comb of idlers in a cascaded four-wave mixing process. The phase-matching requirement of the cascaded process ensures that integer multiples...
We experimentally demonstrate a photonic RF sampling system that utilizes chirp processing of ultrafast laser pulses to achieve all-optical high-rate pseudorandom patterning and inner product integration for compressed sensing measurement. We successfully acquire multi-tone sparse radio frequency (RF) signals at arbitrary offsets from the reconstruction basis frequencies in an 11.95 GHz bandwidth...
We demonstrate 119.2-GSample/s compressive microwave frequency detection using spectrally-encoded ultrafast laser pulses. We sense sparse tones over > 35-GHz instantaneous bandwidth with 2-MHz accuracy using < 300 consecutive compressive measurements acquired at a 400-MHz rate.
Using chirp processing of ultrafast laser pulses to perform pseudorandom measurements for compressed sensing, we successfully reconstruct multi-tone sparse-frequency microwave signals with an effective sampling rate well beyond the electronic limit.
Using a temporal Fourier processor, we demonstrate full error-free demultiplexing of a 160-Gb/s OTDM signal with a single nonlinear interaction. Choice of the time-lens aperture is crucial to maximizing the overall system BER performance.
We report continuous-wave wavelength conversion from the telecom band to the mid-infrared via four-wave mixing in silicon nanowaveguides. We convert a 1636-nm signal to produce a 2384-nm idler, demonstrating a parametric bandwidth of 748 nm.
We demonstrate an increase of nearly 10 dB in the efficiency of broadband wavelength conversion via four-wave mixing in silicon nanowaveguides by incorporating a p-i-n structure and applying modest voltages to remove the free carriers.
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