{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T17:48:06Z","timestamp":1785433686060,"version":"3.56.0"},"reference-count":13,"publisher":"Optica Publishing Group","issue":"14","license":[{"start":{"date-parts":[[2026,7,8]],"date-time":"2026-07-08T00:00:00Z","timestamp":1783468800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/doi.org\/10.1364\/OA_License_v2#VOR"},{"start":{"date-parts":[[2026,7,8]],"date-time":"2026-07-08T00:00:00Z","timestamp":1783468800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/opg.optica.org\/policies\/opg-tdm-policy.json"}],"funder":[{"name":"National Key Research and Development Program of China","award":["2024YFE0105600"],"award-info":[{"award-number":["2024YFE0105600"]}]},{"name":"High-performance Computing Platform of Peking University"}],"content-domain":{"domain":["opg.optica.org"],"crossmark-restriction":false},"short-container-title":["Opt. Lett."],"published-print":{"date-parts":[[2026,7,15]]},"abstract":"<jats:p>Soft link faults in coherent optical networks can degrade service quality, motivating receiver-side monitoring methods that exploit signals already captured during operation. We experimentally demonstrate a fault-aware coherent receiver that adds a parallel monitoring branch based on physics-guided waveform tokenization (PGWT) and Mamba2 to conventional signal recovery. PGWT converts receiver waveform tensors into typed physical tokens describing local in-phase\/quadrature (I\/Q) statistics, envelope variation, phase-increment roughness, spectral bands, spectral shape, coupling, and global balance. The resulting 149\u00d710 token sequence is processed by an Mamba2 selective state-space monitor. In coherent transmission experiments from 320 to 1280\u2009km with controlled 3 and 5\u2009dB attenuation soft faults, PGWT-Mamba2 achieves 0.9211\u00b10.0083 macro F1 for binary attenuation detection and 0.8202\u00b10.0302 for three-state severity estimation, with model-forward latencies of 5.37 and 5.31 \u00b5s per waveform-capture token sequence. Token evidence links the controlled soft faults to distributed phase, balance, spectral, and coupling signatures in the compensated receiver waveform.<\/jats:p>","DOI":"10.1364\/ol.605752","type":"journal-article","created":{"date-parts":[[2026,6,22]],"date-time":"2026-06-22T14:00:09Z","timestamp":1782136809000},"page":"3902","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Physics-guided waveform tokenization and Mamba2 for fault-aware coherent receivers"],"prefix":"10.1364","volume":"51","author":[{"ORCID":"https:\/\/orcid.org\/0009-0007-8524-4651","authenticated-orcid":true,"given":"Zhiming","family":"Sun","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02v51f717","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiang","family":"Cai","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02v51f717","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5017-0356","authenticated-orcid":true,"given":"Xian","family":"Zhou","sequence":"additional","affiliation":[{"name":"University of Science and Technology Beijing"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fan","family":"Zhang","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02v51f717","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2026,7,8]]},"reference":[{"key":"ol-51-14-3902-R1","doi-asserted-by":"publisher","first-page":"525","DOI":"10.1109\/JLT.2015.2480798","type":"journal-article","volume":"34","author":"Dong","year":"2016","journal-title":"J. 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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"}]}}