High-precision optical-frequency dissemination on branching optical-fiber networks

Schediwy, Sascha; Gozzard, David; Baldwin, K. G. H.; Orr, Brian J.; Warrington, R. B.; Aben, Guido; Luiten, André

doi:10.1364/ol.38.002893

Cited by 55 publications

(54 citation statements)

References 10 publications

(12 reference statements)

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“…As proposed by G. Grosche three years ago [1], it is more efficient to implement a main optical link along which the signal is distributed to multiple users. Another possibility is to implement a branching optical fiber network with noise correction at each output end [14]. In this paper, following first implementations on a few-km fiber spools [15][16][17], we demonstrate for the first time a multiple-access frequency dissemination using installed telecommunication fibers of 92 km.…”

Section: Introductionmentioning

confidence: 96%

In-line extraction of an ultrastable frequency signal over an optical fiber link

et al. 2014

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Received Month X, XXXX; revised Month X, XXXX; accepted Month X, XXXX; posted Month X, XXXX (Doc. ID XXXXX); published Month X, XXXX We demonstrate in-line extraction of an ultra-stable frequency signal over an optical link of 92-km of installed telecommunication fibers, following the proposition of G. Grosche in 2010 [1]. We show that the residual frequency noise at the extraction end is noticeably below that at the main link output when the extraction is near the input end, as expected from a simple model of the noise compensation. We obtain relative frequency instabilities, expressed as overlapping Allan deviation, of 8×10 -16 at 1 s averaging time and a few 10 -19 at 1 day. These results are at the state-of-the-art for a link using urban telecommunication fibers. We also propose an improved scheme which delivers an ultra-stable signal of higher power, in order to feed a secondary link. In-line extraction opens the way to a broad distribution of an ultra-stable frequency reference, enabling a wide range of applications beyond metrology.

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Section: Introductionmentioning

confidence: 96%

In-line extraction of an ultrastable frequency signal over an optical fiber link

et al. 2014

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“…For this purpose, several groups are investigating new methods to extract from a stabilized optical link a reference signal with lower complexity [58][59][60][61].…”

Section: Current Developments On Fibre Linksmentioning

confidence: 99%

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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“…1, no stable frequency is delivered to a remote location. Another interesting approach that is worth mentioning attempts to transfer a stable frequency to multiple remote locations simultaneously [29]. Here, a branching fiber network is used and the stabilization of the fiber link transfer is done at the remote end of the link instead of at the local end.…”

Section: Principles Of Fiber Based Frequency Transfermentioning

confidence: 99%

“…This advantage comes at the cost of higher optical losses compared to the conventional technique described above. Delivering a stable frequency to more than one location can also be done by extracting a portion of the transferred signal at any point between the local and the remote end [30,16]. The signals traveling in the forward and in the backward direction between the two ends of the stabilized link can be used to derive a correction signal to extract a stable optical frequency.…”

Section: Principles Of Fiber Based Frequency Transfermentioning

confidence: 99%

Optical frequency dissemination for metrology applications

Droste

Udem

Holzwarth

et al. 2015

Comptes Rendus. Physique

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Mots-clés :Fibre optique Transfert de fréquence Horloge atomique Lasers With the progress in the development of optical frequency standards grows the demand for the dissemination of stable optical frequencies. To date, optical fiber links constitute the most promising medium to bridge large geographical distances while still maintaining a high degree of frequency stability and accuracy. We investigated the transfer of an optical frequency along different fiber links during the past years and achieved a fractional instability and uncertainty at a level lower than 10 −19 using fiber links with lengths of up to almost 2000 km. We give an overview of different techniques and methods that can be used in combination with optical fiber links to achieve a stable frequency transfer. The results of different fiber links are summarized and an outlook of future links is given. © 2015 Académie des sciences. Published by Elsevier Masson SAS. All rights reserved.r é s u m é Avec les progrès réalisés dans le développement de standards de fréquences optiques, les besoins en matière de dissémination de fréquences optiques stables augmentent. À ce jour, la fibre optique constitue le moyen le plus prometteur pour relier de grandes distances géographiques tout en maintenant une haute exigence en matière de stabilité et de précision en fréquence. Nous avons étudié le transfert d'une fréquence optique par différentes fibres au cours des dernières années et avons atteint une instabilité fractionnelle et une imprécision à un niveau inférieur à 10 −19 pour des fibres optiques couvrant une longueur de presque 2000 km. Nous donnons un aperçu de différentes techniques et méthodes qui peuvent être utilisées en combinaison avec des fibres optiques pour obtenir un transfert de fréquence stable. Les résultats obtenus pour différentes fibres optiques sont résumés et un aperçu des futurs développements du transfert par fibre est donné.

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High-precision optical-frequency dissemination on branching optical-fiber networks

Cited by 55 publications

References 10 publications

In-line extraction of an ultrastable frequency signal over an optical fiber link

In-line extraction of an ultrastable frequency signal over an optical fiber link

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

Optical frequency dissemination for metrology applications

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