{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:ADKW6CPIEWSOGT6Y7Z5OLP672W","short_pith_number":"pith:ADKW6CPI","schema_version":"1.0","canonical_sha256":"00d56f09e825a4e34fd8fe7ae5bfdfd59e7107fa089430765c615cb9c01b689d","source":{"kind":"arxiv","id":"1903.01544","version":1},"attestation_state":"computed","paper":{"title":"Dual-polarization NFDM transmission with continuous and discrete spectral modulation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"eess.SP","authors_text":"D. Zibar, E.P. da Silva, F. Da Ros, M. Secondini, N. De Renzis, S. Civelli, S. Gaiarin","submitted_at":"2019-02-26T15:56:39Z","abstract_excerpt":"Nonlinear distortion experienced by signals during their propagation through optical fibers strongly limits the throughput of optical communication systems. Recently, a strong research focus has been dedicated to nonlinearity mitigation and compensation techniques. At the same time, a more disruptive approach, the nonlinear Fourier transform (NFT), aims at designing signaling schemes more suited to the nonlinear fiber channel. In a short period, impressive results have been reported by modulating either the continuous spectrum or the discrete spectrum. Additionally, very recent works further i"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1903.01544","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-02-26T15:56:39Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"8df22407c924178ac2c0a47352b7814a72f2e7f874cff249d82a7d7938055e65","abstract_canon_sha256":"ae1311904b46910a6358b597e793d304838250a3cfbccb90fee6cc89bc208089"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:51:21.064524Z","signature_b64":"xmRuxOPNnjQQ/UTECAJ1XJoaZOQBTz9e2m3/dH2Wu1VAg833lq9IW3MryFvbfVgGQ5pjzL95OYxl0Ry2leEWDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"00d56f09e825a4e34fd8fe7ae5bfdfd59e7107fa089430765c615cb9c01b689d","last_reissued_at":"2026-05-17T23:51:21.063810Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:51:21.063810Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Dual-polarization NFDM transmission with continuous and discrete spectral modulation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"eess.SP","authors_text":"D. Zibar, E.P. da Silva, F. Da Ros, M. Secondini, N. De Renzis, S. Civelli, S. Gaiarin","submitted_at":"2019-02-26T15:56:39Z","abstract_excerpt":"Nonlinear distortion experienced by signals during their propagation through optical fibers strongly limits the throughput of optical communication systems. Recently, a strong research focus has been dedicated to nonlinearity mitigation and compensation techniques. At the same time, a more disruptive approach, the nonlinear Fourier transform (NFT), aims at designing signaling schemes more suited to the nonlinear fiber channel. In a short period, impressive results have been reported by modulating either the continuous spectrum or the discrete spectrum. Additionally, very recent works further i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.01544","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1903.01544","created_at":"2026-05-17T23:51:21.063914+00:00"},{"alias_kind":"arxiv_version","alias_value":"1903.01544v1","created_at":"2026-05-17T23:51:21.063914+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.01544","created_at":"2026-05-17T23:51:21.063914+00:00"},{"alias_kind":"pith_short_12","alias_value":"ADKW6CPIEWSO","created_at":"2026-05-18T12:33:12.712433+00:00"},{"alias_kind":"pith_short_16","alias_value":"ADKW6CPIEWSOGT6Y","created_at":"2026-05-18T12:33:12.712433+00:00"},{"alias_kind":"pith_short_8","alias_value":"ADKW6CPI","created_at":"2026-05-18T12:33:12.712433+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ADKW6CPIEWSOGT6Y7Z5OLP672W","json":"https://pith.science/pith/ADKW6CPIEWSOGT6Y7Z5OLP672W.json","graph_json":"https://pith.science/api/pith-number/ADKW6CPIEWSOGT6Y7Z5OLP672W/graph.json","events_json":"https://pith.science/api/pith-number/ADKW6CPIEWSOGT6Y7Z5OLP672W/events.json","paper":"https://pith.science/paper/ADKW6CPI"},"agent_actions":{"view_html":"https://pith.science/pith/ADKW6CPIEWSOGT6Y7Z5OLP672W","download_json":"https://pith.science/pith/ADKW6CPIEWSOGT6Y7Z5OLP672W.json","view_paper":"https://pith.science/paper/ADKW6CPI","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1903.01544&json=true","fetch_graph":"https://pith.science/api/pith-number/ADKW6CPIEWSOGT6Y7Z5OLP672W/graph.json","fetch_events":"https://pith.science/api/pith-number/ADKW6CPIEWSOGT6Y7Z5OLP672W/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ADKW6CPIEWSOGT6Y7Z5OLP672W/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ADKW6CPIEWSOGT6Y7Z5OLP672W/action/storage_attestation","attest_author":"https://pith.science/pith/ADKW6CPIEWSOGT6Y7Z5OLP672W/action/author_attestation","sign_citation":"https://pith.science/pith/ADKW6CPIEWSOGT6Y7Z5OLP672W/action/citation_signature","submit_replication":"https://pith.science/pith/ADKW6CPIEWSOGT6Y7Z5OLP672W/action/replication_record"}},"created_at":"2026-05-17T23:51:21.063914+00:00","updated_at":"2026-05-17T23:51:21.063914+00:00"}