| Autor: |
Lopez, Olivier, Kanj, Amale, Pottie, Paul-Eric, Rovera, Giovanni D., Achkar, Joseph, Chardonnet, Christian, Amy-Klein, Anne, Santarelli, Giorgio |
| Rok vydání: |
2012 |
| Předmět: |
|
| Zdroj: |
Applied Physics B: Lasers and Optics 110, 1 (2013) 3-6 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1007/s00340-012-5241-0 |
| Popis: |
In this work we demonstrate for the first time that it is possible to transfer simultaneously an ultra-stable optical frequency and a precise and accurate timing over 540 km using a public telecommunication optical fiber networks with Internet data. The optical phase is used to carry both the frequency information and the timestamps by modulating a very narrow optical carrier at 1.55 $\mu$m with spread spectrum signals using two-way satellite time transfer modems. The results in term of absolute time accuracy (250 ps) and long-term timing stability (20 ps) well outperform the conventional Global Navigation Satellite System or geostationary transfer methods. |
| Databáze: |
arXiv |
| Externí odkaz: |
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