{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:SBMBL7LQBDIT4DRCTNSVLSIEBD","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"5b848f41ad96bbb98cf9adee291424d1d680061b06f2701f911b9bf18b2bd64e","cross_cats_sorted":["physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2023-02-03T14:16:40Z","title_canon_sha256":"2bbdfae140d2da8cd344992109a65119708b9dd9c72a9f47b7f2a1774770ca4c"},"schema_version":"1.0","source":{"id":"2304.11096","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2304.11096","created_at":"2026-07-05T06:03:19Z"},{"alias_kind":"arxiv_version","alias_value":"2304.11096v1","created_at":"2026-07-05T06:03:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2304.11096","created_at":"2026-07-05T06:03:19Z"},{"alias_kind":"pith_short_12","alias_value":"SBMBL7LQBDIT","created_at":"2026-07-05T06:03:19Z"},{"alias_kind":"pith_short_16","alias_value":"SBMBL7LQBDIT4DRC","created_at":"2026-07-05T06:03:19Z"},{"alias_kind":"pith_short_8","alias_value":"SBMBL7LQ","created_at":"2026-07-05T06:03:19Z"}],"graph_snapshots":[{"event_id":"sha256:8ccc542e194e23e6c1a70230c132e4139eb32f0abae94f0926e2a835b7e932f6","target":"graph","created_at":"2026-07-05T06:03:19Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2304.11096/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A filter design based on Vernier microrings and wideband directional couplers is proposed for ASE noise suppression in next generation DCI applications. We demonstrate a 40 nm FSR-free filter with > 20.5 dB average ER and 3dB-BW of 75 GHz, achieving wavelength-independent performance and full tunability with a maximum tuning temperature of 75 K.","authors_text":"Benjamin Wohlfeil, Bernhard Schmauss, Saif Alnairat, Stevan Djordjevic","cross_cats":["physics.app-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2023-02-03T14:16:40Z","title":"Silicon Photonics Wavelength-Independent C-Band Tunable Optical Filter With Feasible Thermal Tuning Requirements"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2304.11096","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:5ece9d9293ff656086a2a480183948725a57aac59c507600240805803d8aca9c","target":"record","created_at":"2026-07-05T06:03:19Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"5b848f41ad96bbb98cf9adee291424d1d680061b06f2701f911b9bf18b2bd64e","cross_cats_sorted":["physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2023-02-03T14:16:40Z","title_canon_sha256":"2bbdfae140d2da8cd344992109a65119708b9dd9c72a9f47b7f2a1774770ca4c"},"schema_version":"1.0","source":{"id":"2304.11096","kind":"arxiv","version":1}},"canonical_sha256":"905815fd7008d13e0e229b6555c90408ee53705ac1dd9b01aa13db52e9ffd205","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"905815fd7008d13e0e229b6555c90408ee53705ac1dd9b01aa13db52e9ffd205","first_computed_at":"2026-07-05T06:03:19.119515Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:03:19.119515Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IZFwcyYFH8prbqorbwsXkyNy+v1b1hY+ZyKEDEIBjgySSLvQ6OvdrQJjF/hBE7uPkjuj67YFyuiJuyo4wFIkAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T06:03:19.120000Z","signed_message":"canonical_sha256_bytes"},"source_id":"2304.11096","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5ece9d9293ff656086a2a480183948725a57aac59c507600240805803d8aca9c","sha256:8ccc542e194e23e6c1a70230c132e4139eb32f0abae94f0926e2a835b7e932f6"],"state_sha256":"74e4cc5e65dfd8b1576212250826daaa2a07be4654c24c50115c2820c47348f0"}