Wideband fiber optic vector modulator using 8-tap all-optical Hilbert transformer

Ryand Tucker; Sergio C. Granieri; Azad Siahmakoun

doi:10.1117/12.886525

21 June 2011 Wideband fiber optic vector modulator using 8-tap all-optical Hilbert transformer

Ryand Tucker, Sergio C. Granieri, Azad Siahmakoun

Proceedings Volume 8021, Radar Sensor Technology XV; 80211X (2011) https://doi.org/10.1117/12.886525
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

Abstract

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.

Citation Download Citation

Ryand Tucker, Sergio C. Granieri, and 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); https://doi.org/10.1117/12.886525

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KEYWORDS

Modulators

Phase shifts

Transformers

Signal attenuation

Switches

Fiber optics

Phase shift keying

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