{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:U362CELC5MXJULHOIZX7P4TSR7","short_pith_number":"pith:U362CELC","schema_version":"1.0","canonical_sha256":"a6fda11162eb2e9a2cee466ff7f2728fefc69e99252c93d4df8d1019252115fe","source":{"kind":"arxiv","id":"2110.13002","version":1},"attestation_state":"computed","paper":{"title":"Reconfigurable and Real-Time Nyquist OTDM Demultiplexing in Silicon Photonics","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.app-ph"],"primary_cat":"eess.SP","authors_text":"Arijit Misra, Christian Kress, Janosch Meier, J. Christoph Scheytt, Karanveer Singh, Stefan Preu{\\ss}ler, Thomas Schneider, Tobias Schwabe","submitted_at":"2021-10-19T12:46:02Z","abstract_excerpt":"We demonstrate for the first time, to the best of our knowledge, reconfigurable and real-time orthogonal time-domain demultiplexing of coherent multilevel Nyquist signals in silicon photonics. No external pulse source is needed and frequencytime coherence is used to sample the incoming Nyquist OTDM signal with orthogonal sinc-shaped Nyquist pulse sequences using Mach-Zehnder modulators. All the parameters such as bandwidth and channel selection are completely tunable in the electrical domain. The feasibility of this scheme is demonstrated through a demultiplexing experiment over the entire C-b"},"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":"2110.13002","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2021-10-19T12:46:02Z","cross_cats_sorted":["physics.app-ph"],"title_canon_sha256":"073862a764babaf4d4eaf36fa561849bc50fcfcf55c77494b16a5ece18153b4a","abstract_canon_sha256":"24a897b9d6c03f2686e46d039fde8daa8cbb272cee045f1af10092373202efd7"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:12:51.249998Z","signature_b64":"kprZcRyBI6S5fCHs8mJ1fmcNIzTy+kB0Vc8rls0zHCOwh0BHQaqXh68hsTdpXYIP6yfG0VkliPmUMfG2xAqPDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a6fda11162eb2e9a2cee466ff7f2728fefc69e99252c93d4df8d1019252115fe","last_reissued_at":"2026-07-05T04:12:51.249441Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:12:51.249441Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Reconfigurable and Real-Time Nyquist OTDM Demultiplexing in Silicon Photonics","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.app-ph"],"primary_cat":"eess.SP","authors_text":"Arijit Misra, Christian Kress, Janosch Meier, J. Christoph Scheytt, Karanveer Singh, Stefan Preu{\\ss}ler, Thomas Schneider, Tobias Schwabe","submitted_at":"2021-10-19T12:46:02Z","abstract_excerpt":"We demonstrate for the first time, to the best of our knowledge, reconfigurable and real-time orthogonal time-domain demultiplexing of coherent multilevel Nyquist signals in silicon photonics. No external pulse source is needed and frequencytime coherence is used to sample the incoming Nyquist OTDM signal with orthogonal sinc-shaped Nyquist pulse sequences using Mach-Zehnder modulators. All the parameters such as bandwidth and channel selection are completely tunable in the electrical domain. The feasibility of this scheme is demonstrated through a demultiplexing experiment over the entire C-b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2110.13002","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2110.13002/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2110.13002","created_at":"2026-07-05T04:12:51.249494+00:00"},{"alias_kind":"arxiv_version","alias_value":"2110.13002v1","created_at":"2026-07-05T04:12:51.249494+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2110.13002","created_at":"2026-07-05T04:12:51.249494+00:00"},{"alias_kind":"pith_short_12","alias_value":"U362CELC5MXJ","created_at":"2026-07-05T04:12:51.249494+00:00"},{"alias_kind":"pith_short_16","alias_value":"U362CELC5MXJULHO","created_at":"2026-07-05T04:12:51.249494+00:00"},{"alias_kind":"pith_short_8","alias_value":"U362CELC","created_at":"2026-07-05T04:12:51.249494+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/U362CELC5MXJULHOIZX7P4TSR7","json":"https://pith.science/pith/U362CELC5MXJULHOIZX7P4TSR7.json","graph_json":"https://pith.science/api/pith-number/U362CELC5MXJULHOIZX7P4TSR7/graph.json","events_json":"https://pith.science/api/pith-number/U362CELC5MXJULHOIZX7P4TSR7/events.json","paper":"https://pith.science/paper/U362CELC"},"agent_actions":{"view_html":"https://pith.science/pith/U362CELC5MXJULHOIZX7P4TSR7","download_json":"https://pith.science/pith/U362CELC5MXJULHOIZX7P4TSR7.json","view_paper":"https://pith.science/paper/U362CELC","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2110.13002&json=true","fetch_graph":"https://pith.science/api/pith-number/U362CELC5MXJULHOIZX7P4TSR7/graph.json","fetch_events":"https://pith.science/api/pith-number/U362CELC5MXJULHOIZX7P4TSR7/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/U362CELC5MXJULHOIZX7P4TSR7/action/timestamp_anchor","attest_storage":"https://pith.science/pith/U362CELC5MXJULHOIZX7P4TSR7/action/storage_attestation","attest_author":"https://pith.science/pith/U362CELC5MXJULHOIZX7P4TSR7/action/author_attestation","sign_citation":"https://pith.science/pith/U362CELC5MXJULHOIZX7P4TSR7/action/citation_signature","submit_replication":"https://pith.science/pith/U362CELC5MXJULHOIZX7P4TSR7/action/replication_record"}},"created_at":"2026-07-05T04:12:51.249494+00:00","updated_at":"2026-07-05T04:12:51.249494+00:00"}