{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:E3YSS56OJMPRGWGCMSYXRPIPLS","short_pith_number":"pith:E3YSS56O","schema_version":"1.0","canonical_sha256":"26f12977ce4b1f1358c264b178bd0f5cb46d8a3e948f4496cbe5f8cafb124dc3","source":{"kind":"arxiv","id":"1711.02228","version":1},"attestation_state":"computed","paper":{"title":"Fully-automated optimization of grating couplers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"physics.app-ph","authors_text":"Alexander Y. Piggott, Dries Vercruysse, Jelena Vu\\v{c}kovi\\'c, Logan Su, Neil V. Sapra, Rahul Trivedi","submitted_at":"2017-11-07T00:02:49Z","abstract_excerpt":"We present a gradient-based algorithm to design general 1D grating couplers without any human input from start to finish, including a choice of initial condition. We show that we can reliably design efficient couplers to have multiple functionalities in different geometries, including conventional couplers for single-polarization and single-wavelength operation, polarization-insensitive couplers, and wavelength-demultiplexing couplers. In particular, we design a fiber-to-chip blazed grating with under 0.2 dB insertion loss that requires a single etch to fabricate and no back-reflector."},"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":"1711.02228","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2017-11-07T00:02:49Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"e5022799dcdcc7131039f675b05040b24157bf0590e6171d7137bdf4ae3d8848","abstract_canon_sha256":"f89849d869af838277dc59c68c41625c11fd3766b5336be8a26e2ae5b65a0575"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:21:09.884212Z","signature_b64":"7UAvGtzWIut2/xQG9WIMgjMI3VVcNqH//KIrJ64PmjJS8Vamrwwv3iv1bY65Oj2yNoSeBRcTbib7PZoarWsOBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"26f12977ce4b1f1358c264b178bd0f5cb46d8a3e948f4496cbe5f8cafb124dc3","last_reissued_at":"2026-05-18T00:21:09.883765Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:21:09.883765Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Fully-automated optimization of grating couplers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"physics.app-ph","authors_text":"Alexander Y. Piggott, Dries Vercruysse, Jelena Vu\\v{c}kovi\\'c, Logan Su, Neil V. Sapra, Rahul Trivedi","submitted_at":"2017-11-07T00:02:49Z","abstract_excerpt":"We present a gradient-based algorithm to design general 1D grating couplers without any human input from start to finish, including a choice of initial condition. We show that we can reliably design efficient couplers to have multiple functionalities in different geometries, including conventional couplers for single-polarization and single-wavelength operation, polarization-insensitive couplers, and wavelength-demultiplexing couplers. In particular, we design a fiber-to-chip blazed grating with under 0.2 dB insertion loss that requires a single etch to fabricate and no back-reflector."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.02228","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":"1711.02228","created_at":"2026-05-18T00:21:09.883826+00:00"},{"alias_kind":"arxiv_version","alias_value":"1711.02228v1","created_at":"2026-05-18T00:21:09.883826+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.02228","created_at":"2026-05-18T00:21:09.883826+00:00"},{"alias_kind":"pith_short_12","alias_value":"E3YSS56OJMPR","created_at":"2026-05-18T12:31:12.930513+00:00"},{"alias_kind":"pith_short_16","alias_value":"E3YSS56OJMPRGWGC","created_at":"2026-05-18T12:31:12.930513+00:00"},{"alias_kind":"pith_short_8","alias_value":"E3YSS56O","created_at":"2026-05-18T12:31:12.930513+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/E3YSS56OJMPRGWGCMSYXRPIPLS","json":"https://pith.science/pith/E3YSS56OJMPRGWGCMSYXRPIPLS.json","graph_json":"https://pith.science/api/pith-number/E3YSS56OJMPRGWGCMSYXRPIPLS/graph.json","events_json":"https://pith.science/api/pith-number/E3YSS56OJMPRGWGCMSYXRPIPLS/events.json","paper":"https://pith.science/paper/E3YSS56O"},"agent_actions":{"view_html":"https://pith.science/pith/E3YSS56OJMPRGWGCMSYXRPIPLS","download_json":"https://pith.science/pith/E3YSS56OJMPRGWGCMSYXRPIPLS.json","view_paper":"https://pith.science/paper/E3YSS56O","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1711.02228&json=true","fetch_graph":"https://pith.science/api/pith-number/E3YSS56OJMPRGWGCMSYXRPIPLS/graph.json","fetch_events":"https://pith.science/api/pith-number/E3YSS56OJMPRGWGCMSYXRPIPLS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/E3YSS56OJMPRGWGCMSYXRPIPLS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/E3YSS56OJMPRGWGCMSYXRPIPLS/action/storage_attestation","attest_author":"https://pith.science/pith/E3YSS56OJMPRGWGCMSYXRPIPLS/action/author_attestation","sign_citation":"https://pith.science/pith/E3YSS56OJMPRGWGCMSYXRPIPLS/action/citation_signature","submit_replication":"https://pith.science/pith/E3YSS56OJMPRGWGCMSYXRPIPLS/action/replication_record"}},"created_at":"2026-05-18T00:21:09.883826+00:00","updated_at":"2026-05-18T00:21:09.883826+00:00"}