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Long-distance telecom-fiber transfer of a radio-frequency reference for radio astronomy

He, Yabai; Baldwin, Kenneth; Orr, Brian J.; Bruce Warrington, R.; Wouters, Michael J.; Luiten, Andre N.; Mirtschin, Peter; Tzioumis, Tasso; Phillips, Chris; Stevens, Jamie; Lennon, Brett; Munting, Scott; Aben, Guido; Newlands, Thomas; Rayner, Tim


Very-long-baseline interferometry (VLBI) for high-resolution astronomical imaging requires phase-stable frequency references at widely separated radio-telescope antennas. For the first time to our knowledge, we have disseminated a suitable radio-frequency (RF) reference for VLBI over a "real-world" telecom optical-fiber link between radio telescopes that are >100‚ÄČkm apart, by means of an innovative phase-conjugation technique. Bidirectional optical amplification is used in parallel with live...[Show more]

CollectionsANU Research Publications
Date published: 2018
Type: Journal article
Source: Optica
DOI: 10.1364/OPTICA.5.000138
Access Rights: Open Access


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