21 June 2011 Wideband fiber optic vector modulator using 8-tap all-optical Hilbert transformer
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A wideband photonic RF vector modulator with novel architecture is presented and demonstrated with capability of continuous amplitude modulation and 0°-360° phase shifting. In-phase and quadrature-phase components of the output signal are used to produce 360° continuous phase shifting and optical attenuation is used to control the signal amplitude. A novel 8-tap all-optical transverse-filter implementing a Hilbert transform is proposed and demonstrated to produce 90° quadrature phase-shift for the broadband RF signal. Experimental apparatus and results for continuous vector modulation will be presented for the frequency range of 1-6 GHz.
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Ryand Tucker, Ryand Tucker, Sergio C. Granieri, Sergio C. Granieri, Azad Siahmakoun, Azad Siahmakoun, } "Wideband fiber optic vector modulator using 8-tap all-optical Hilbert transformer", Proc. SPIE 8021, Radar Sensor Technology XV, 80211X (21 June 2011); doi: 10.1117/12.886525; https://doi.org/10.1117/12.886525

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