Ultra-stable long distance optical frequency distribution using the Internet fiber network

Lopez, Olivier; Haboucha, Adil; Chanteau, Bruno; Chardonnet, Christian; Amy‐Klein, Anne; Santarelli, Giorgio

doi:10.1364/oe.20.023518

Cited by 151 publications

(129 citation statements)

References 25 publications

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“…The frequency stability of the link reaches a resolution of 10 -18 at 30 000 s averaging time, which is almost identical to the one reported in Ref. [28]. The timing stability (TDEV) is less than 20 ps for any measurement time up to one day.…”

Section: Ultra-stable Optical Frequency Transfer On Long-haul Fibre Lsupporting

confidence: 84%

“…2) and demonstrated a 172-km link using recirculation in the same fibres [23]. Following these pioneering results, several groups worldwide have initiated experiments on optical links [24,27,28,[30][31][32][46][47][48].…”

Section: Ultra-stable Optical Frequency Transfer On Long-haul Fibre Lmentioning

confidence: 99%

“…The link starts and ends at the LPL laboratory (Université Paris 13) and the repeater station is located at Reims. Each sub-link is composed of three different fibre spans [28]. The first span of 11 km and the last span of 223 km are simultaneously carrying digital data traffic from the RENATER network.…”

Section: Ultra-stable Optical Frequency Transfer On Long-haul Fibre Lmentioning

confidence: 99%

“…The high sensitivity detection of the optical phase using heterodyne methods in conjunction with spectrally very pure lasers, are the basic tools to achieve low-noise optical frequency transfer. In the last decade, several experiments in Europe, USA and Japan have explored the limits of this method, paving the way for a new generation of ultra-stable optical networks [18,[21][22][23][24][25][26][27][28][29][30][31]. A groundbreaking frequency transfer has been demonstrated on a record distance of 920 km and even 1840 km on a dedicated fibre network [27,32].…”

Section: Introductionmentioning

confidence: 99%

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Frequency and time transfer for metrology and beyond using telecommunication network fibres

Lopez

Kéfélian

Jiang

et al. 2015

Comptes Rendus. Physique

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The distribution and the comparison of an ultra-stable optical frequency and accurate time using optical fibres have been greatly improved in the last ten years. The frequency stability and accuracy of optical links surpass well-established methods using the global navigation satellite system and geostationary satellites. In this paper, we present a review of the methods and the results obtained. We show that public telecommunication network carrying Internet data can be used to compare and distribute ultra-stable metrological signals over long distances. This novel technique paves the way for the deployment of a national and continental ultra-stable metrological optical network. RésuméLa distribution et la comparaison d'étalons de fréquence optique ultra-stables et d'échelle de temps ont été grandement améliorées depuis dix ans par l'emploi de fibres optiques. La stabilité de fréquence et l'exactitude des liens optiques fibrés surpassent les méthodes bien établies fondées sur les communications satellitaires. Dans cet article, nous présentons les méthodes et les résultats obtenus pendant cette décade. Nous montrons que les réseaux de télécommunication publics transportant des données internet peuvent être utilisés pour comparer et distribuer des signaux métrologiques sur de grandes distances. Ceci ouvre la voie au déploiement d'un réseau métrologique à l'échelle nationale et continentale.

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Section: Ultra-stable Optical Frequency Transfer On Long-haul Fibre Lsupporting

confidence: 84%

Section: Ultra-stable Optical Frequency Transfer On Long-haul Fibre Lmentioning

confidence: 99%

Section: Ultra-stable Optical Frequency Transfer On Long-haul Fibre Lmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Frequency and time transfer for metrology and beyond using telecommunication network fibres

Lopez

Kéfélian

Jiang

et al. 2015

Comptes Rendus. Physique

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“…20). The parallel development of optical fiber links [26][27][28] allows the dissemination of an optical frequency over long distances with a negligible added noise. With such a link, the possibility of comparing two remote OLCs has been demonstrated 29 recently.…”

mentioning

confidence: 99%

Experimental realization of an optical second with strontium lattice clocks

et al. 2013

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Progress in realizing the SI second had multiple technological impacts and enabled further constraint of theoretical models in fundamental physics. Caesium microwave fountains, realizing best the second according to its current definition with a relative uncertainty of 2-4 Â 10 À 16 , have already been overtaken by atomic clocks referenced to an optical transition, which are both more stable and more accurate. Here we present an important step in the direction of a possible new definition of the second. Our system of five clocks connects with an unprecedented consistency the optical and the microwave worlds. For the first time, two state-of-the-art strontium optical lattice clocks are proven to agree within their accuracy budget, with a total uncertainty of 1.5 Â 10 À 16 . Their comparison with three independent caesium fountains shows a degree of accuracy now only limited by the best realizations of the microwave-defined second, at the level of 3.1 Â 10 À 16 .

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A Precise Frequency Comparison System Using an Optical Carrier

Wada

Watabe

Okubo

et al. 2015

Elect Comm in Japan

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SUMMARYWe have investigated the performance of an optical carrier transfer system for remote comparison of optical clocks. In the frequency transfer system, technical problems and fundamental principles limit coherent transfer on a long-haul optical fiber. They contribute to noise processes that come from the propagation delay in the fiber, the design of the interferometer, burst length fluctuations of the fiber, asymmetrical propagation characteristics, and so on. The feasibility of a full optical link with high stability is discussed. Phase detection with a high degree of precision and cancelation of the fiber-induced noise on the round-trip light are achieved with a well-known standard technique using an all-fiber-based interferometer. We report the characteristics of these noise processes with results on a spooled fiber. The Allan deviation of the compensated link which is extended to 90 km reaches 5 × 10 −18 , close to the theoretical limit imposed by the delay-unsuppressed fiber noise at an averaging time of 103 s. C⃝ 2015 Wiley Periodicals, Inc. Electron Comm Jpn, 98(11): 19-27, 2015; Published online in Wiley Online Library (wileyonlinelibrary.com).

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Ultra-stable long distance optical frequency distribution using the Internet fiber network

Cited by 151 publications

References 25 publications

Frequency and time transfer for metrology and beyond using telecommunication network fibres

Frequency and time transfer for metrology and beyond using telecommunication network fibres

Experimental realization of an optical second with strontium lattice clocks

A Precise Frequency Comparison System Using an Optical Carrier

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