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Active phase drift cancellation for optic-fiber frequency transfer using a photonic radio-frequency phase shifter



Active phase drift cancellation for optic-fiber frequency transfer using a photonic radio-frequency phase shifter



Optics Letters 39(8): 2346-2349



We propose an active photonic phase drift cancellation scheme for frequency transfer over optical fiber based on a linear photonic RF phase shifter. The photonic RF phase shifter consists of a dual parallel Mach-Zehnder modulator and optical filter with the assistance of the local microwave signal. The phase drift induced by fiber transmission can be compensated by simply tuning the bias voltage of the modulator. The principle of the phase cancellation scheme based on the photonic phase shifter is demonstrated and validated experimentally by transferring a 0.5 GHz reference signal over a 20 km single-mode fiber with a root mean square jitter of less than 0.5 ps.

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Accession: 051346577

Download citation: RISBibTeXText

PMID: 24978989

DOI: 10.1364/ol.39.002346


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