REFIMEVE+: Optical Frequency Dissemination Over 2x1300 km of a Telecom Network

Cantin, Etienne; Lopez, Olivier; Amy‐Klein, Anne; Chardonnet, Christian; Tonnes, Mads; Meynadier, Frédéric; Pottie, Paul-Éric; Quintin, Nicolas; Camisard, Émilie; Santarelli, Giorgio; Guillou-Camargo, Fabiola; Ménoret, Vincent

doi:10.1109/fcs.2019.8856085

Cited by 2 publications

(1 citation statement)

References 10 publications

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“…The notable difference is in the requirements on the underlying infrastructure, as the dark channels dedicated to photonic transfers must be amplified by specialized bidirectional amplifiers with the same propagation path for both transmission directions [18]. Despite these increased demands, the existing fiber-optic infrastructure provides a feasible vehicle for the development of sizeable photonic transfer networks-a task that has already been addressed by several scientific consortiums at multinational scale [19,20].…”

Section: Introductionmentioning

confidence: 99%

Phase-Noise Characterization in Stable Optical Frequency Transfer over Free Space and Fiber Link Testbeds

Barcik,

Hrabina,

Cizek

et al. 2023

Electronics

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Time and frequency metrology depends on stable oscillators in both radio-frequency and optical domains. With the increased complexity of the highly precise oscillators also came the demand for delivering the oscillators’ harmonic signals between delocalized sites for comparison, aggregation, or other purposes. Besides the traditional optical fiber networks, free-space optical links present an alternative tool for disseminating stable sources’ output. We present a pilot experiment of phase-coherent optical frequency transfer using a free-space optical link testbed. The experiment performed on a 30 m long link demonstrates the phase-noise parameters in a free-space optical channel under atmospheric turbulence conditions, and it studies the impact of active MEMS mirror stabilization of the received optical wave positioning on the resulting transfer’s performance. Our results indicate that a well-configured MEMS mirror beam stabilization significantly enhances fractional frequency stability, achieving the−14th-order level for integration times over 30 s.

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Section: Introductionmentioning

confidence: 99%

Phase-Noise Characterization in Stable Optical Frequency Transfer over Free Space and Fiber Link Testbeds

Barcik,

Hrabina,

Cizek

et al. 2023

Electronics

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Unveiling the Spectroscopy of Complex Organic Radicals by Exploiting Faraday Rotation at (Sub-)millimeter Wavelengths. Illustration with the Acetonyl Radical

Chahbazian,

Juppet,

Pirali

2024

J. Phys. Chem. Lett.

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Radical species constitute the main reactants of numerous chemical reaction networks occurring in diverse environments. Rotationally resolved laboratory data, essential to undertake the detection of these highly reactive species, remain difficult to obtain using conventional high-resolution spectroscopy techniques. In the present work, we exploit a new experimental setup based on the Faraday rotation detection technique which allows us to study the gas phase spectra of relatively large radicals, such as dehydrogenated complex organic molecules (COMs). We recorded 2086 pure rotational transitions of the acetonyl radical (CH 3 COCH 2 ) in the 150−450 GHz range, for which no rotational information was previously available. The radical exhibits relatively complex couplings of angular momenta, involving the overall rotation angular momentum, the spin of the unpaired electron, and two large amplitude motions. The data set has been fit using a semirigid Hamiltonian and shows the need for the development of specific theoretical models.

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REFIMEVE+: Optical Frequency Dissemination Over 2x1300 km of a Telecom Network

Cited by 2 publications

References 10 publications

Phase-Noise Characterization in Stable Optical Frequency Transfer over Free Space and Fiber Link Testbeds

Phase-Noise Characterization in Stable Optical Frequency Transfer over Free Space and Fiber Link Testbeds

Unveiling the Spectroscopy of Complex Organic Radicals by Exploiting Faraday Rotation at (Sub-)millimeter Wavelengths. Illustration with the Acetonyl Radical

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