Effect of a timebase mismatch in two-way optical frequency transfer
Two-way frequency transfer on optical fibers is a powerful technique for the comparison of distant clocks over long and ultra-long hauls. In contrast to traditional Doppler noise cancellation, it is capable of sustaining higher link attenuation, mitigating the need of optical amplification and regen...
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| Veröffentlicht in: | Metrologia 2017-12, Vol.54 (6), p.805-809 |
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| container_title | Metrologia |
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| creator | Tampellini, Anna Clivati, Cecilia Levi, Filippo Mura, Alberto Calonico, Davide |
| description | Two-way frequency transfer on optical fibers is a powerful technique for the comparison of distant clocks over long and ultra-long hauls. In contrast to traditional Doppler noise cancellation, it is capable of sustaining higher link attenuation, mitigating the need of optical amplification and regeneration and thus reducing the setup complexity. We investigate the ultimate limitations of the two-way approach on a 300 km multiplexed fiber haul, considering fully independent setups and acquisition systems at the two link ends. We derive a theoretical model to predict the performance deterioration due to a bad synchronisation of the measurements, which is confirmed by experimental results. This study demonstrates that two-way optical frequency transfer is a reliable and performing technique, capable of sustaining remote clocks comparisons at the 10−19 resolution, and is relevant for the development of a fiber network of continental scale for frequency metrology in Europe. |
| doi_str_mv | 10.1088/1681-7575/aa8a41 |
| format | Article |
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| fulltext | fulltext |
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| ispartof | Metrologia, 2017-12, Vol.54 (6), p.805-809 |
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| language | eng |
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| source | IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link |
| subjects | Clocks Effects fiber frequency transfer fiber links Fiber optics Frequencies Measurement optical clocks comparisons Optical fibers Optical frequency optical phase post-processing Performance degradation phase noise measurements Regeneration |
| title | Effect of a timebase mismatch in two-way optical frequency transfer |
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