Suppression of amplitude-to-phase noise conversion in balanced optical-microwave phase detectors

Maurice Lessing , Helen S. Margolis , C. Tom A. Brown , Patrick Gill , Giuseppe Marra

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classification ⚛️ physics.optics

keywords noisephaseam-pmamplitude-to-phasebalancedconversionfrequencyoffset

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We demonstrate an amplitude-to-phase (AM-PM) conversion coefficient for a balanced optical-microwave phase detector (BOM-PD) of 0.001 rad, corresponding to AM-PM induced phase noise 60 dB below the single-sideband relative intensity noise of the laser. This enables us to generate 8 GHz microwave signals from a commercial Er-fibre comb with a single-sideband residual phase noise of -131 dBc/Hz at 1 Hz offset frequency and -148 dBc/Hz at 1 kHz offset frequency.

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Suppression of amplitude-to-phase noise conversion in balanced optical-microwave phase detectors

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