Photonic Instantaneous RF Frequency Measurement System based on Complementary Modulation

Conference PaperinProceedings of SPIE - The International Society for Optical Engineering · February 2011with6 Reads
Impact Factor: 0.20 · DOI: 10.1109/EUROCON.2011.5929413 · Source: DBLP
Conference: Proceedings of EUROCON 2011, International Conference on Computer as a Tool, 27-29 April 2011, Lisbon, Portugal

    Abstract

    A photonic instantaneous frequency measurement system based on complementary electro-optic modulation is proposed and experimentally demonstrated. A dual-electrode, dual-output Mach-Zehnder modulator is used to simultaneously achieve electro-optical modulation and complementary modulation sideband (MS) filtering. By suppressing the optical carrier at one of the modulator outputs, complementary MS filtering is mapped into two complementary average optical powers from which the RF frequency is derived. The obtained frequency measurement is independent of both optical and RF powers, and also robust to electrical circuitry imperfections.