{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:YIUBK3GPO62SD36THSG3WKT5QU","short_pith_number":"pith:YIUBK3GP","schema_version":"1.0","canonical_sha256":"c228156ccf77b521efd33c8dbb2a7d8510fad1b3a26293299f5db0bf7b2d0f41","source":{"kind":"arxiv","id":"1707.03445","version":1},"attestation_state":"computed","paper":{"title":"Arrayed Waveguide Grating Spectrometers for Astronomical Applications: New Results","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ins-det","physics.optics"],"primary_cat":"astro-ph.IM","authors_text":"Joss Bland-Hawthorn, Mario Dagenais, Pradip Gatkine, Sylvain Veilleux, Yiwen Hu","submitted_at":"2017-07-11T19:51:23Z","abstract_excerpt":"One promising application of photonics to astronomical instrumentation is the miniaturization of near-infrared (NIR) spectrometers for large ground- and space-based astronomical telescopes. Here we present new results from our effort to fabricate arrayed waveguide grating (AWG) spectrometers for astronomical applications entirely in-house. Our latest devices have a peak overall throughput of ~23%, a spectral resolving power (${\\lambda}/{\\delta}{\\lambda}$) of ~1300, and cover the entire H band (1450-1650 nm) for Transverse Electric (TE) polarization. These AWGs use a silica-on-silicon platform "},"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":"1707.03445","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-07-11T19:51:23Z","cross_cats_sorted":["physics.ins-det","physics.optics"],"title_canon_sha256":"4efeb81df227b9a76bb6221d1151720cb69ad1f2cbda7fec650350a0ed0bd066","abstract_canon_sha256":"029f90ba84878e78025acae2d6cff75781ac56b9046b3e08dc97e75f05281e65"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:33:16.520629Z","signature_b64":"y24farMowRxcshxUP0yyjK4xJ6acrk3K66NZGuCXHSoERPzPivR763SnTgIdq6WpppA9z8jhfvBcCwCQX3W0Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c228156ccf77b521efd33c8dbb2a7d8510fad1b3a26293299f5db0bf7b2d0f41","last_reissued_at":"2026-05-18T00:33:16.519948Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:33:16.519948Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Arrayed Waveguide Grating Spectrometers for Astronomical Applications: New Results","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ins-det","physics.optics"],"primary_cat":"astro-ph.IM","authors_text":"Joss Bland-Hawthorn, Mario Dagenais, Pradip Gatkine, Sylvain Veilleux, Yiwen Hu","submitted_at":"2017-07-11T19:51:23Z","abstract_excerpt":"One promising application of photonics to astronomical instrumentation is the miniaturization of near-infrared (NIR) spectrometers for large ground- and space-based astronomical telescopes. Here we present new results from our effort to fabricate arrayed waveguide grating (AWG) spectrometers for astronomical applications entirely in-house. Our latest devices have a peak overall throughput of ~23%, a spectral resolving power (${\\lambda}/{\\delta}{\\lambda}$) of ~1300, and cover the entire H band (1450-1650 nm) for Transverse Electric (TE) polarization. These AWGs use a silica-on-silicon platform "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.03445","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":"1707.03445","created_at":"2026-05-18T00:33:16.520062+00:00"},{"alias_kind":"arxiv_version","alias_value":"1707.03445v1","created_at":"2026-05-18T00:33:16.520062+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.03445","created_at":"2026-05-18T00:33:16.520062+00:00"},{"alias_kind":"pith_short_12","alias_value":"YIUBK3GPO62S","created_at":"2026-05-18T12:31:56.362134+00:00"},{"alias_kind":"pith_short_16","alias_value":"YIUBK3GPO62SD36T","created_at":"2026-05-18T12:31:56.362134+00:00"},{"alias_kind":"pith_short_8","alias_value":"YIUBK3GP","created_at":"2026-05-18T12:31:56.362134+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2608.00834","citing_title":"Qualification pathways for Photonic Integrated Circuits in Astrophotonic Space Missions","ref_index":5,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/YIUBK3GPO62SD36THSG3WKT5QU","json":"https://pith.science/pith/YIUBK3GPO62SD36THSG3WKT5QU.json","graph_json":"https://pith.science/api/pith-number/YIUBK3GPO62SD36THSG3WKT5QU/graph.json","events_json":"https://pith.science/api/pith-number/YIUBK3GPO62SD36THSG3WKT5QU/events.json","paper":"https://pith.science/paper/YIUBK3GP"},"agent_actions":{"view_html":"https://pith.science/pith/YIUBK3GPO62SD36THSG3WKT5QU","download_json":"https://pith.science/pith/YIUBK3GPO62SD36THSG3WKT5QU.json","view_paper":"https://pith.science/paper/YIUBK3GP","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1707.03445&json=true","fetch_graph":"https://pith.science/api/pith-number/YIUBK3GPO62SD36THSG3WKT5QU/graph.json","fetch_events":"https://pith.science/api/pith-number/YIUBK3GPO62SD36THSG3WKT5QU/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/YIUBK3GPO62SD36THSG3WKT5QU/action/timestamp_anchor","attest_storage":"https://pith.science/pith/YIUBK3GPO62SD36THSG3WKT5QU/action/storage_attestation","attest_author":"https://pith.science/pith/YIUBK3GPO62SD36THSG3WKT5QU/action/author_attestation","sign_citation":"https://pith.science/pith/YIUBK3GPO62SD36THSG3WKT5QU/action/citation_signature","submit_replication":"https://pith.science/pith/YIUBK3GPO62SD36THSG3WKT5QU/action/replication_record"}},"created_at":"2026-05-18T00:33:16.520062+00:00","updated_at":"2026-05-18T00:33:16.520062+00:00"}