2.8 km fiber link with phase noise compensation for transportable Yb<sup>+</sup> optical clock characterization

Kudeyarov, K. S.; Vishnyakova, G. A.; Khabarova, K. Yu.; Kolachevsky, Nikolai N.

doi:10.1088/1555-6611/aacfa1

Cited by 11 publications

(2 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such networks are already being deployed within national and international frameworks. In practice, ultra-stable optical links have been implemented at several scales, from the laboratory or campus [21], [22] to inner-and inter-city links [23]- [25] and beyond, with long-haul fiber links [26]- [29].…”

Section: Introductionmentioning

confidence: 99%

Digital Doppler-cancellation servo for ultra-stable optical frequency dissemination over fiber

Mukherjee,

Millo,

Marechal

et al. 2021

Preprint

View full text Add to dashboard Cite

Progress made in optical references, including ultra-stable Fabry-Perot cavities, optical frequency combs and optical atomic clocks, have driven the need for ultra-stable optical fiber networks. Telecom-wavelength ultra-pure optical signal transport has been demonstrated on distances ranging from the laboratory scale to the continental scale. In this manuscript, we present a Doppler-cancellation setup based on a digital phase-locked loop for ultra-stable optical signal dissemination over fiber. The optical phase stabilization setup is based on a usual heterodyne Michelson-interferometer setup, while the Software Defined Radio (SDR) implementation of the phase-locked loop is based on a compact commercial board embedding a field programmable gate array, analog-to-digital and digital-to-analog converters. Using three different configurations including an undersampling method, we demonstrate a 20 m long fiber link with residual fractional frequency instability as low as 10 −18 at 1000 s, and an optical phase noise of −70 dBc/Hz at 1 Hz with a telecom frequency carrier.

show abstract

Section: Introductionmentioning

confidence: 99%

Digital Doppler-cancellation servo for ultra-stable optical frequency dissemination over fiber

Mukherjee,

Millo,

Marechal

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…The calibration of frequency standards is performed by high precision frequency standard comparison measurement. A frequency standard comparison measurement is conducted to measure and evaluate the accuracy and stability of frequency standard, which has important practical significance for the rational use of frequency standard in engineering [11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Development of a Miniaturized Frequency Standard Comparator Based on FPGA

Tang

Wang

et al. 2019

Electronics

View full text Add to dashboard Cite

Frequency standard comparison measurement has important practical significance for the rational use of frequency standard in engineering. This paper was devoted to the study of frequency standard comparison measurement based on classical dual mixing time difference method. However, in the actual system design and implementation, the commonly used counter was discarded and the phase difference was measured by a digital signal processing method based on Field Programmable Gate Array (FPGA). A miniaturized 10 MHz frequency standard comparator with good noise floor was successfully developed. The size of the prototype circuit board is only about 292.1 cm2. The experimental results showed that the noise floor of the frequency standard comparator was typically better than 7.50 × 10-12/s, and its relative error of phase difference measurement was less than 1.70 × 10-5.

show abstract

Frequency transfer via an ultra-stable free-space link

Kudeyarov¹,

Kryuchkov²,

Vishnyakova³

et al. 2020

Quantum Electron.

View full text Add to dashboard Cite

An optical frequency transfer at a wavelength of 1542 nm via an ultra-stable 5-m free-space link with active compensation of the phase noise caused by atmospheric fluctuations is demonstrated. The link-induced phase noise and its contribution to the frequency transfer instability are investigated. It is shown that, with the phase compensation system switched on, the link contribution to the relative transfer instability in terms of Allan deviation reaches 1.7 × 10−19 for a 5000-s averaging time.

show abstract

2.8 km fiber link with phase noise compensation for transportable Yb⁺ optical clock characterization

Cited by 11 publications

References 30 publications

Digital Doppler-cancellation servo for ultra-stable optical frequency dissemination over fiber

Digital Doppler-cancellation servo for ultra-stable optical frequency dissemination over fiber

Development of a Miniaturized Frequency Standard Comparator Based on FPGA

Frequency transfer via an ultra-stable free-space link

Contact Info

Product

Resources

About

2.8 km fiber link with phase noise compensation for transportable Yb+ optical clock characterization

Cited by 11 publications

References 30 publications

Digital Doppler-cancellation servo for ultra-stable optical frequency dissemination over fiber

Digital Doppler-cancellation servo for ultra-stable optical frequency dissemination over fiber

Development of a Miniaturized Frequency Standard Comparator Based on FPGA

Frequency transfer via an ultra-stable free-space link

Contact Info

Product

Resources

About

2.8 km fiber link with phase noise compensation for transportable Yb⁺ optical clock characterization