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

0579226 - ÚPT 2024 RIV CH eng J - Článek v odborném periodiku
Barcík, P. - Hrabina, Jan - Čížek, Martin - Kolka, Z. - Skryja, P. - Pravdová, Lenka - Číp, Ondřej - Hudcová, L. - Havliš, O. - Vojtěch, J.
Phase-Noise Characterization in Stable Optical Frequency Transfer over Free Space and Fiber Link Testbeds.
Electronics. Roč. 12, č. 23 (2023), č. článku 4870. E-ISSN 2079-9292
Grant CEP: GA MŠMT(CZ) EF16_026/0008460
GRANT EU: European Commission(XE) 22IEM01 - TOCK
Institucionální podpora: RVO:68081731
Klíčová slova: time and frequency metrology * optical frequency transfer * free-space optics * optical fiber link * phase noise * MEMS mirror
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 2.9, rok: 2022
Způsob publikování: Open access
https://www.mdpi.com/2079-9292/12/23/4870

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.
Trvalý link: https://hdl.handle.net/11104/0348078