Free-space optical link phase noise measurement

0568272 - ÚPT 2023 PL eng A - Abstract
Hrabina, Jan - Čížek, Martin - Pravdová, Lenka - Číp, Ondřej - Barcík, P. - Kolka, Z. - Skryja, P.
Free-space optical link phase noise measurement.
Book of Abstracts. 22nd Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics, September 5-9, 2022, Wojanów, Poland. Wrocław: Wroclaw University of Science and Technology, 2022 - (Sztylińska, K.). s. 156
[Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics /22./. 05.09.2022-09.09.2022, Wojanow]
R&D Projects: GA TA ČR(CZ) TN01000008; GA MŠMT(CZ) EF16_026/0008460
Institutional support: RVO:68081731
Keywords : free space optical link * phase noise * phase-coherent transfer * time and frequency
OECD category: Optics (including laser optics and quantum optics)
https://psc2022.pwr.edu.pl/docs/pscoc2022_book_of_abstracts.pdf

Dissemination of precise time and frequencies and its corresponding infrastructure has become a key tool for many scientific and industrial applications (optical clocks comparisons, global navigation and positioning systems, security). Although most of these transfers use optical fibre networks, free-space photonic links represent an essential supplement in cases where the fibres cannot be utilised. This work presents pilot experimental results of free-space optical (FSO) link phase noise measurement, an initial requirement for further intended phase-coherent transfer of precise time and frequency. The measurement setup consists of a 30 m long unidirectional FSO (DUT) supplied by an ultra-narrow 1540 nm fibre laser (locked to the ultra-stable optical cavity), and it is supplemented with parallel phase-noise stabilised optical fibre delivering the reference beam to the beat-note with the signal obtained from the FSO receiver.
Permanent Link: https://hdl.handle.net/11104/0339599