LOPEZ, Olivier; HABOUCHA, Adil; CHANTEAU, Bruno; CHARDONNET, Christian; AMY-KLEIN, Anne; SANTARELLI, Giorgio

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LOPEZ, Olivier
MMTF

HABOUCHA, Adil
Systèmes de Référence Temps Espace [SYRTE]

CHANTEAU, Bruno
MMTF

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Optics Express. 2012-10-08, vol. 20, n° 21, p. 23518-23526

Optical Society of America - OSA Publishing

Résumé en anglais

We report an optical link of 540 km for ultrastable frequency distribution over the Internet fiber network. The stable frequency optical signal is processed enabling uninterrupted propagation on both directions. The robustness and the performance of the link are enhanced by a cost effective fully automated optoelectronic station. This device is able to coherently regenerate the return optical signal with a heterodyne optical phase locking of a low noise laser diode. Moreover the incoming signal polarization variation are tracked and processed in order to maintain beat note amplitudes within the operation range. Stable fibered optical interferometer enables optical detection of the link round trip phase signal. The phase-noise compensated link shows a fractional frequency instability in 10 Hz bandwidth of 5x10-15 at one second measurement time and 2x10-19 at 30 000 s. This work is a significant step towards a sustainable wide area ultrastable optical frequency distribution and comparison network.< Réduire

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Metrological instrumentation

Fiber optics links and subsystems

Lasers and laser optics

Phase measurement

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

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