Fiber-based multiple-access optical frequency dissemination

Bai, Yu; Wang, B.; Zhu, Xi; Gao, Chao; Miao, Jing; Wang, L. J.

doi:10.1364/ol.38.003333

Cited by 35 publications

(29 citation statements)

References 18 publications

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“…The extraction stability is 1.3x10 -15 at 1 s averaging time, decreases as expected with a τ -1 slope and reaches a floor of 10 -18 after 2000 s. It is at the state of the art for fiber frequency transfer on such distances [5]. A better stability has been obtained with a similar extraction set-up [16,17] but with fiber spools of up to 3 km, which are much less noisy. The extraction end stability is very similar to the end-to-end stability (blue diamonds), except for averaging time longer than 2000 s. In this configuration, the F factor introduced above is equal to 0.99, thus we expect that the extraction end stability copies the output stability.…”

Section: Resultssupporting

confidence: 53%

“…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. Moreover we show that the residual frequency noise at the extraction end is below that at the main link output.…”

Section: Introductionmentioning

confidence: 97%

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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: Resultssupporting

confidence: 53%

Section: Introductionmentioning

confidence: 97%

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

et al. 2014

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“…3), C-out is as stable as Z for short times (10 -17 at 10 s); the excess frequency instability at 1000 s is below 10 -18 . After 10000 s, an instability below 10 -19 is reached; this is a factor 40 lower than reported in [15]. The total uncompensated fiber length (Fig.…”

mentioning

confidence: 58%

Eavesdropping time and frequency: phase noise cancellation along a time-varying path, such as an optical fiber

Grosche¹

2014

Opt. Lett.

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Single-mode optical fiber is a highly efficient connecting medium, used not only for optical telecommunications but also for the dissemination of ultra-stable frequencies or timing signals. In 1994, Ma, Jungner, Ye and Hall described a measurement and control system to deliver the same optical frequency at two places, namely the two ends of a fiber, by eliminating the "fiber-induced phase-noise modulation, which corrupts high-precision frequency-based applications". We present a simple detection and control scheme to deliver the same optical frequency at many places anywhere along a transmission path, or in its vicinity, with a relative instability of 1 part in 10 19

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“…That scheme includes an extraction stage along the main link, as initially proposed in [16] and demonstrated in [13][14][15]18]. Both forward and backward extracted signals exhibits phase fluctuations, because the noise correction at the main link input is overcorrecting the phase noise at this intermediate point.…”

Section: Principlementioning

confidence: 99%

Ultrastable optical frequency dissemination on a multi-access fibre network

et al. 2016

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International audienceWe report a laboratory demonstration of the dissemination of an ultrastable optical frequency signal to two distant users simultaneously using a branching network. The ultrastable signal is extracted along a main fibre link; it is optically tracked by a narrow linewidth laser diode, which light is injected in a secondary link. The propagation noise of both links is actively compensated. We implement this scheme with two links of 50-km fibre spools, the extraction being set up at the mid-point of the main link. We show that the extracted signal at the end of the secondary link exhibits a fractional frequency instability of 1.4 × 10−15 at 1-s measurement time, almost equal to the 1.3 × 10−15 instability of the main link output end. The long-term instabilities are also very similar, at a level of 3–5 × 10−20 at 3 × 104-s integration time. We also show that the setting up of this extraction device, or of a simpler one, at the main link input, can test the proper functioning of the noise rejection on this main link. This work is a significant step towards a robust and flexible ultrastable network for multi-users dissemination

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Fiber-based multiple-access optical frequency dissemination

Cited by 35 publications

References 18 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

Eavesdropping time and frequency: phase noise cancellation along a time-varying path, such as an optical fiber

Ultrastable optical frequency dissemination on a multi-access fibre network

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