{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:RVQXD26Y5SA4SRI7X2C77XOW6A","short_pith_number":"pith:RVQXD26Y","canonical_record":{"source":{"id":"1708.06879","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-08-23T03:50:07Z","cross_cats_sorted":[],"title_canon_sha256":"f691a0b193e90fb7cc3bbae4d51c613b5c404b7b58274e55cfcdfcd4ec8a9591","abstract_canon_sha256":"8a548590df4827f0db2b98ee10b5e6696306512347d41c4c2c2903164242e4bc"},"schema_version":"1.0"},"canonical_sha256":"8d6171ebd8ec81c9451fbe85ffddd6f0051b1dce9b73e025598ae2902fb11ec5","source":{"kind":"arxiv","id":"1708.06879","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.06879","created_at":"2026-05-18T00:36:38Z"},{"alias_kind":"arxiv_version","alias_value":"1708.06879v2","created_at":"2026-05-18T00:36:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.06879","created_at":"2026-05-18T00:36:38Z"},{"alias_kind":"pith_short_12","alias_value":"RVQXD26Y5SA4","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"RVQXD26Y5SA4SRI7","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"RVQXD26Y","created_at":"2026-05-18T12:31:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:RVQXD26Y5SA4SRI7X2C77XOW6A","target":"record","payload":{"canonical_record":{"source":{"id":"1708.06879","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-08-23T03:50:07Z","cross_cats_sorted":[],"title_canon_sha256":"f691a0b193e90fb7cc3bbae4d51c613b5c404b7b58274e55cfcdfcd4ec8a9591","abstract_canon_sha256":"8a548590df4827f0db2b98ee10b5e6696306512347d41c4c2c2903164242e4bc"},"schema_version":"1.0"},"canonical_sha256":"8d6171ebd8ec81c9451fbe85ffddd6f0051b1dce9b73e025598ae2902fb11ec5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:36:38.015447Z","signature_b64":"iBNJiNBVV5FBH7/NfAboPXNsmjwnkZpfEwvPmvEctAsdfaTVG61aUj7vtoXK4dCN8T5UagjGMsAPLkQ0gGh2DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8d6171ebd8ec81c9451fbe85ffddd6f0051b1dce9b73e025598ae2902fb11ec5","last_reissued_at":"2026-05-18T00:36:38.014780Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:36:38.014780Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1708.06879","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:36:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IQ08AV0VbJux6TSai2L9APizhy3ZQpCsGjqaD60s5l+c3Jpp16t14Yv8SkCIEh0x43SS40H2Qtqb03k9hI4VDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T20:44:38.008270Z"},"content_sha256":"8527d4ed039e2bbb2be5f5ad4ce41bd678d8bf23e4fbb8ba89b88b3e1700e12e","schema_version":"1.0","event_id":"sha256:8527d4ed039e2bbb2be5f5ad4ce41bd678d8bf23e4fbb8ba89b88b3e1700e12e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:RVQXD26Y5SA4SRI7X2C77XOW6A","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Empirical formulae for hollow-core antiresonant fibers: dispersion and effective mode area","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Imran Hasan, Nail Akhmediev, Wonkeun Chang","submitted_at":"2017-08-23T03:50:07Z","abstract_excerpt":"We present empirical formulae that can provide dispersion and average effective area of the fundamental mode in hollow-core antiresonant fibers. The formulae draw on the structural parameters of the fiber, and allow one to obtain the guiding properties over a wide spectral bandwidth, without the need for time consuming numerical simulations. The formulae are validated by comparing their results with those obtained using a finite-element method. We also analyze the effects of changing the number of antiresonant tubes, as well as adding nested elements in the antiresonant tubes on the guiding pr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.06879","kind":"arxiv","version":2},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:36:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yE6V5MfJ5tuBxPWXfLxmnamNC4gnZTECp2seyAlsHhk1WshZ1LiCvQuYsWoOt3zrwPCy0tsJIhrJnxC9YowzAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T20:44:38.008623Z"},"content_sha256":"ac99f8bc641feb59403af777fea4473da44659d2ec57b64181161c8e31d9687d","schema_version":"1.0","event_id":"sha256:ac99f8bc641feb59403af777fea4473da44659d2ec57b64181161c8e31d9687d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RVQXD26Y5SA4SRI7X2C77XOW6A/bundle.json","state_url":"https://pith.science/pith/RVQXD26Y5SA4SRI7X2C77XOW6A/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RVQXD26Y5SA4SRI7X2C77XOW6A/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-24T20:44:38Z","links":{"resolver":"https://pith.science/pith/RVQXD26Y5SA4SRI7X2C77XOW6A","bundle":"https://pith.science/pith/RVQXD26Y5SA4SRI7X2C77XOW6A/bundle.json","state":"https://pith.science/pith/RVQXD26Y5SA4SRI7X2C77XOW6A/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RVQXD26Y5SA4SRI7X2C77XOW6A/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:RVQXD26Y5SA4SRI7X2C77XOW6A","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":"8a548590df4827f0db2b98ee10b5e6696306512347d41c4c2c2903164242e4bc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-08-23T03:50:07Z","title_canon_sha256":"f691a0b193e90fb7cc3bbae4d51c613b5c404b7b58274e55cfcdfcd4ec8a9591"},"schema_version":"1.0","source":{"id":"1708.06879","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.06879","created_at":"2026-05-18T00:36:38Z"},{"alias_kind":"arxiv_version","alias_value":"1708.06879v2","created_at":"2026-05-18T00:36:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.06879","created_at":"2026-05-18T00:36:38Z"},{"alias_kind":"pith_short_12","alias_value":"RVQXD26Y5SA4","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"RVQXD26Y5SA4SRI7","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"RVQXD26Y","created_at":"2026-05-18T12:31:43Z"}],"graph_snapshots":[{"event_id":"sha256:ac99f8bc641feb59403af777fea4473da44659d2ec57b64181161c8e31d9687d","target":"graph","created_at":"2026-05-18T00:36:38Z","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"},"paper":{"abstract_excerpt":"We present empirical formulae that can provide dispersion and average effective area of the fundamental mode in hollow-core antiresonant fibers. The formulae draw on the structural parameters of the fiber, and allow one to obtain the guiding properties over a wide spectral bandwidth, without the need for time consuming numerical simulations. The formulae are validated by comparing their results with those obtained using a finite-element method. We also analyze the effects of changing the number of antiresonant tubes, as well as adding nested elements in the antiresonant tubes on the guiding pr","authors_text":"Imran Hasan, Nail Akhmediev, Wonkeun Chang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-08-23T03:50:07Z","title":"Empirical formulae for hollow-core antiresonant fibers: dispersion and effective mode area"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.06879","kind":"arxiv","version":2},"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":"sha256:8527d4ed039e2bbb2be5f5ad4ce41bd678d8bf23e4fbb8ba89b88b3e1700e12e","target":"record","created_at":"2026-05-18T00:36:38Z","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":"8a548590df4827f0db2b98ee10b5e6696306512347d41c4c2c2903164242e4bc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-08-23T03:50:07Z","title_canon_sha256":"f691a0b193e90fb7cc3bbae4d51c613b5c404b7b58274e55cfcdfcd4ec8a9591"},"schema_version":"1.0","source":{"id":"1708.06879","kind":"arxiv","version":2}},"canonical_sha256":"8d6171ebd8ec81c9451fbe85ffddd6f0051b1dce9b73e025598ae2902fb11ec5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8d6171ebd8ec81c9451fbe85ffddd6f0051b1dce9b73e025598ae2902fb11ec5","first_computed_at":"2026-05-18T00:36:38.014780Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:36:38.014780Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iBNJiNBVV5FBH7/NfAboPXNsmjwnkZpfEwvPmvEctAsdfaTVG61aUj7vtoXK4dCN8T5UagjGMsAPLkQ0gGh2DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:36:38.015447Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.06879","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8527d4ed039e2bbb2be5f5ad4ce41bd678d8bf23e4fbb8ba89b88b3e1700e12e","sha256:ac99f8bc641feb59403af777fea4473da44659d2ec57b64181161c8e31d9687d"],"state_sha256":"8efce22a39bc8b76768d0700788e7c9f5d5c5f566890213b561a915334616e68"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nXOZrId33bTddgB/1oCLiTshpJICxeZAupjyjMuwOSf6s/7OXAvOBLF8LhrYAULGSKPtRFrqt3TX60JhhZeRAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-24T20:44:38.010505Z","bundle_sha256":"e15d5cadbaee7086ad444ba6c680a6a761a021fda44dfb482b1423eb9b652ddd"}}