2009
DOI: 10.1364/ol.34.003050
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Stable transmission of radio frequency signals on fiber links using interferometric delay sensing

Abstract: We demonstrate distribution of a 2850 MHz rf signal over stabilized optical fiber links. For a 2.2 km link we measure an rms drift of 19.4 fs over 60 h, and for a 200 m link an rms drift of 8.4 fs over 20 h. The rf signals are transmitted as amplitude modulation on a continuous optical carrier. Variations in the delay length are sensed using heterodyne interferometry and used to correct the rf phase. The system uses standard fiber telecommunications components.

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Cited by 59 publications
(45 citation statements)
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“…Supersonic expansion of nitrogen with a backing pressure of 3 bar through a 100 µm diameter nozzle and a 200 µm diameter skimmer produced a molecular beam. The target volume contained a nearly uniform molecular density of ~10 13 cm −3 and the target gas had a rotational temperature of approximately 20 K. The 800 nm laser pulse used to align the molecular gas had a pulse energy of ~400 µJ, a repetition rate of 360 Hz, and a duration of ~60 fs in a quasi-flat top pulse, which was measured by autocorrelation after the experimental run. It was not possible to obtain direct optical autocorrelation information at the interaction region during the run.…”
Section: Experiments and Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…Supersonic expansion of nitrogen with a backing pressure of 3 bar through a 100 µm diameter nozzle and a 200 µm diameter skimmer produced a molecular beam. The target volume contained a nearly uniform molecular density of ~10 13 cm −3 and the target gas had a rotational temperature of approximately 20 K. The 800 nm laser pulse used to align the molecular gas had a pulse energy of ~400 µJ, a repetition rate of 360 Hz, and a duration of ~60 fs in a quasi-flat top pulse, which was measured by autocorrelation after the experimental run. It was not possible to obtain direct optical autocorrelation information at the interaction region during the run.…”
Section: Experiments and Resultsmentioning
confidence: 99%
“…The optical laser is synchronized by a stabilized fiber optic timing system described in Ref [13]. This system locks a mode-locked Ti:Sapphire oscillator to the 476 MHz RF reference derived from resonant RF cavities.…”
Section: Timing the Lasermentioning
confidence: 99%
“…Thus, it is the recommended reference signal and is the frequency that has been used in these studies. Ongoing research also indicates that 1 GHz signals can be synthesized with even less degradation and such reference signals can now be transmitted over long distances with fiber techniques (e.g., Wilcox et al 2009). Thus the time standards no longer need to be on-site.…”
Section: Possible Improvement Of Cso Time Standardsmentioning
confidence: 99%
“…This number is larger than that reported in ref. 4 for a similar fiber length because in that case both receivers were in the same enclosure and shared components. The 300m fiber loop included several flat-polished connectors, which may contribute to short-term error by adding unwanted optical signals in phase with the main signal.…”
Section: Ojivco Signalmentioning
confidence: 99%