{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,2]],"date-time":"2026-10-02T18:52:47Z","timestamp":1790967167476,"version":"4.1.0"},"reference-count":17,"publisher":"Optica Publishing Group","issue":"20","license":[{"start":{"date-parts":[[2026,10,2]],"date-time":"2026-10-02T00:00:00Z","timestamp":1790899200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/doi.org\/10.1364\/OA_License_v2#VOR"},{"start":{"date-parts":[[2026,10,2]],"date-time":"2026-10-02T00:00:00Z","timestamp":1790899200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/opg.optica.org\/policies\/opg-tdm-policy.json"}],"content-domain":{"domain":["opg.optica.org"],"crossmark-restriction":false},"short-container-title":["Opt. Lett."],"published-print":{"date-parts":[[2026,10,15]]},"abstract":"<jats:p>\n                    In this Letter, we propose a multiple access fiber-optic radio-frequency transfer, time, and phase synchronization scheme using passive optical coupling and symmetric carrier configuration. In the proposed scheme, the RF signal is distributed to distant nodes via a symmetric carrier configuration, which inherently suppresses link length-dependent phase difference. Access nodes are connected to the fiber link via passive optical coupling. Time signals are generated at each node by leveraging transferred frequency signals and synchronized by time-division multiplexing transmission and active delay compensation. Experimentally, a 2\u2009GHz RF signal is transferred to access and terminal nodes over 20-km and 60-km fiber links, respectively, and compensated separately. The measured frequency stability is better than 4\u00d710\n                    <jats:sup>\u221214<\/jats:sup>\n                    and 2\u00d710\n                    <jats:sup>\u221216<\/jats:sup>\n                    at averaging time of 1\u2009s and 10\n                    <jats:sup>4<\/jats:sup>\n                    s, respectively. For the synchronized link, the measured time stability is better than 7 ps at 1\u2009s and 4 ps at 10\n                    <jats:sup>4<\/jats:sup>\n                    s. The phase consistency of RF signals is better than 10 ps (2\n                    <jats:bold>%<\/jats:bold>\n                    of the entire signal cycle) when subjected to changes in link length and system restart.\n                  <\/jats:p>","DOI":"10.1364\/ol.611933","type":"journal-article","created":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T14:00:10Z","timestamp":1789048810000},"page":"5661","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Multiple access fiber-optic radio-frequency transfer, time, and phase synchronization using symmetric carrier configuration and passive optical coupling"],"prefix":"10.1364","volume":"51","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-3538-6478","authenticated-orcid":true,"given":"Junwei","family":"Ren","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/0220qvk04","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuzhe","family":"Ma","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/0220qvk04","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiaxing","family":"Shui","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/0220qvk04","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7176-2078","authenticated-orcid":true,"given":"Liang","family":"Hu","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/0220qvk04","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jianping","family":"Chen","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/0220qvk04","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Shanghai Key Laboratory of Navigation and Location Based Services"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4334-7704","authenticated-orcid":true,"given":"Guiling","family":"Wu","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/0220qvk04","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Shanghai Key Laboratory of Navigation and Location Based Services"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2026,10,2]]},"reference":[{"key":"ol-51-20-5661-R1","doi-asserted-by":"publisher","first-page":"nwaf236","DOI":"10.1093\/nsr\/nwaf236","type":"journal-article","volume":"12","author":"Chen","year":"2025","journal-title":"Natl. 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All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.","name":"copyright","label":"Copyright"}]}}