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We propose and demonstrate a tunable broadband photonic radio frequency (RF) phase shifter based on a silicon microring resonator. This scheme utilizes the thermal nonlinear effect of the silicon microring to change the electrical phase of the RF signal with a wide tuning range. A prototype of the phase shifter is experimentally demonstrated for a 40-GHz signal with a 0-4.6-rad tuning range.
We report various all-optical signal processing functions using silicon microring resonators with a 450times250-nm cross section. These demonstrations include slow-light delay of phase-modulated data and microwave photonic signal, wavelength conversion/multicasting, format conversions, and optical differentiation.
We demonstrate a microwave-photonic phase shifter based on a 20-mum-radius silicon micro-ring resonator, providing a tunable phase shift for a 20-GHz signal in a range of 0 - -4.6 rad.
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