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EnglishWe performed a two-way remote optical phase comparison on optical fiber. Two optical frequency signals were launched in opposite directions in an optical fiber and their phases were simultaneously measured at the other end. In this technique, the fiber noise is passively cancelled, and we compared two optical frequencies at the ultimate 10-21 stability level. The experiment was performed on a 47km fiber that is part of the metropolitan network for Internet traffic. The technique relies on the synchronous measurement of the optical phases at the two ends of the link, that is here performed by digital electronics. This scheme offers some advantages with respect to active noise cancellation schemes, as the light travels only once in the fiber.
Digital implementation of a two-way coherent phase transfer over optical fiber for remote clocks comparisons / Calosso, C. E.; Bertacco, E.; Calonico, D.; Clivati, C.; Costanzo, G. A.; Frittelli, M.; Levi, F.; Micalizio, S.; Mura, A.; Godone, A.. - ELETTRONICO. - (2014), pp. 329-332. ((Intervento presentato al convegno 28th European Frequency and Time Forum, EFTF 2014 tenutosi a Neuchatel, Switzerland nel 2014 [10.1109/EFTF.2014.7331501].
| Titolo: | Digital implementation of a two-way coherent phase transfer over optical fiber for remote clocks comparisons | |
| Autori: | ||
| Data di pubblicazione: | 2014 | |
| Abstract: | We performed a two-way remote optical phase comparison on optical fiber. Two optical frequency si...gnals were launched in opposite directions in an optical fiber and their phases were simultaneously measured at the other end. In this technique, the fiber noise is passively cancelled, and we compared two optical frequencies at the ultimate 10-21 stability level. The experiment was performed on a 47km fiber that is part of the metropolitan network for Internet traffic. The technique relies on the synchronous measurement of the optical phases at the two ends of the link, that is here performed by digital electronics. This scheme offers some advantages with respect to active noise cancellation schemes, as the light travels only once in the fiber. | |
| ISBN: | 978-1-4799-5252-6 | |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
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| File | Descrizione | Tipologia | Licenza | |
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| !2014 EFTF Digital implementation of a two-way coherent phase transfer over optical fiber for remote clocks comparisons.pdf | EFTF2014 | 2a Post-print versione editoriale / Version of Record | Non Pubblico - Accesso privato/ristretto | Administrator Richiedi una copia |
http://hdl.handle.net/11583/2821381
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