{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:JX3HCWHZAKQTE45KGYHEBTSJBB","short_pith_number":"pith:JX3HCWHZ","canonical_record":{"source":{"id":"1811.07666","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-11-19T13:22:36Z","cross_cats_sorted":[],"title_canon_sha256":"5ab3e1cdf202698f71a73ce8b20b2a1a53e23c9231467bae27cc885ba51f4233","abstract_canon_sha256":"a0f86f691c288da5dadef4d2ec9ce821d657fe7628172083cf1e03c400202b94"},"schema_version":"1.0"},"canonical_sha256":"4df67158f902a13273aa360e40ce49084d695677ac9aae1f32a509be8c7ea4f9","source":{"kind":"arxiv","id":"1811.07666","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.07666","created_at":"2026-05-17T23:46:03Z"},{"alias_kind":"arxiv_version","alias_value":"1811.07666v1","created_at":"2026-05-17T23:46:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.07666","created_at":"2026-05-17T23:46:03Z"},{"alias_kind":"pith_short_12","alias_value":"JX3HCWHZAKQT","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_16","alias_value":"JX3HCWHZAKQTE45K","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_8","alias_value":"JX3HCWHZ","created_at":"2026-05-18T12:32:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:JX3HCWHZAKQTE45KGYHEBTSJBB","target":"record","payload":{"canonical_record":{"source":{"id":"1811.07666","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-11-19T13:22:36Z","cross_cats_sorted":[],"title_canon_sha256":"5ab3e1cdf202698f71a73ce8b20b2a1a53e23c9231467bae27cc885ba51f4233","abstract_canon_sha256":"a0f86f691c288da5dadef4d2ec9ce821d657fe7628172083cf1e03c400202b94"},"schema_version":"1.0"},"canonical_sha256":"4df67158f902a13273aa360e40ce49084d695677ac9aae1f32a509be8c7ea4f9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:46:03.800118Z","signature_b64":"BF+u8wCILd1DtA41R98On4aobh79JKmdVSiWsedgdvcy0S+1n3Btlv1Ai4x6nXcBOYOVS6C5V9UiOKzjrGzSCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4df67158f902a13273aa360e40ce49084d695677ac9aae1f32a509be8c7ea4f9","last_reissued_at":"2026-05-17T23:46:03.799396Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:46:03.799396Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1811.07666","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:46:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2sa3/pdgRUMKi+UTe2TPRaZliBKoWgq7R3R11pfB+iuaX7Nx8TQZTYJ3BLULCL6bOOJNhHtxDCZzpt1/59dJDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T01:58:29.318945Z"},"content_sha256":"5b7639b506277f6655cd18da8e67aa55d760c6632ad6719b5d8e354c1b40eb3c","schema_version":"1.0","event_id":"sha256:5b7639b506277f6655cd18da8e67aa55d760c6632ad6719b5d8e354c1b40eb3c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:JX3HCWHZAKQTE45KGYHEBTSJBB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Efficient Channel Model for Homogeneous Weakly Coupled Multicore Fiber","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Deming Liu, Jiajun Zhou, Lin Gan, Ming Tang, Songnian Fu","submitted_at":"2018-11-19T13:22:36Z","abstract_excerpt":"To analyze a homogeneous weakly coupled multicore fiber (WC-MCF) based transmission system via simulation, we propose an efficient (fast and accurate) WC-MCF's channel model, which can describe the propagation effects including attenuation, walk-off, chromatic dispersion, self-phase modulation (SPM), and especially the frequency-dependent inter-core crosstalk (XT). We speed up the simulation with two orders of magnitude by simplifying the XT's calculation. On one hand, the calculation step size can be greatly increased by utilizing a new XT's coupling matrix. On the other hand, the calculation"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.07666","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:46:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yiF6PA8QRxYIV4CHlaMhowBHo9j5NjIvWFCP6XSq3mJxPDMsAou4h/wwbVPSvR/YSOz63BzYYhWHFtnB3DP9BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T01:58:29.319634Z"},"content_sha256":"d9907f2331393257d40b5fe2b5771627be8ea89e8c45a3031b311ffa1cb068c1","schema_version":"1.0","event_id":"sha256:d9907f2331393257d40b5fe2b5771627be8ea89e8c45a3031b311ffa1cb068c1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JX3HCWHZAKQTE45KGYHEBTSJBB/bundle.json","state_url":"https://pith.science/pith/JX3HCWHZAKQTE45KGYHEBTSJBB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JX3HCWHZAKQTE45KGYHEBTSJBB/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":"2026-05-31T01:58:29Z","links":{"resolver":"https://pith.science/pith/JX3HCWHZAKQTE45KGYHEBTSJBB","bundle":"https://pith.science/pith/JX3HCWHZAKQTE45KGYHEBTSJBB/bundle.json","state":"https://pith.science/pith/JX3HCWHZAKQTE45KGYHEBTSJBB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JX3HCWHZAKQTE45KGYHEBTSJBB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:JX3HCWHZAKQTE45KGYHEBTSJBB","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":"a0f86f691c288da5dadef4d2ec9ce821d657fe7628172083cf1e03c400202b94","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-11-19T13:22:36Z","title_canon_sha256":"5ab3e1cdf202698f71a73ce8b20b2a1a53e23c9231467bae27cc885ba51f4233"},"schema_version":"1.0","source":{"id":"1811.07666","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.07666","created_at":"2026-05-17T23:46:03Z"},{"alias_kind":"arxiv_version","alias_value":"1811.07666v1","created_at":"2026-05-17T23:46:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.07666","created_at":"2026-05-17T23:46:03Z"},{"alias_kind":"pith_short_12","alias_value":"JX3HCWHZAKQT","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_16","alias_value":"JX3HCWHZAKQTE45K","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_8","alias_value":"JX3HCWHZ","created_at":"2026-05-18T12:32:33Z"}],"graph_snapshots":[{"event_id":"sha256:d9907f2331393257d40b5fe2b5771627be8ea89e8c45a3031b311ffa1cb068c1","target":"graph","created_at":"2026-05-17T23:46:03Z","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":"To analyze a homogeneous weakly coupled multicore fiber (WC-MCF) based transmission system via simulation, we propose an efficient (fast and accurate) WC-MCF's channel model, which can describe the propagation effects including attenuation, walk-off, chromatic dispersion, self-phase modulation (SPM), and especially the frequency-dependent inter-core crosstalk (XT). We speed up the simulation with two orders of magnitude by simplifying the XT's calculation. On one hand, the calculation step size can be greatly increased by utilizing a new XT's coupling matrix. On the other hand, the calculation","authors_text":"Deming Liu, Jiajun Zhou, Lin Gan, Ming Tang, Songnian Fu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-11-19T13:22:36Z","title":"Efficient Channel Model for Homogeneous Weakly Coupled Multicore Fiber"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.07666","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":"sha256:5b7639b506277f6655cd18da8e67aa55d760c6632ad6719b5d8e354c1b40eb3c","target":"record","created_at":"2026-05-17T23:46:03Z","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":"a0f86f691c288da5dadef4d2ec9ce821d657fe7628172083cf1e03c400202b94","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-11-19T13:22:36Z","title_canon_sha256":"5ab3e1cdf202698f71a73ce8b20b2a1a53e23c9231467bae27cc885ba51f4233"},"schema_version":"1.0","source":{"id":"1811.07666","kind":"arxiv","version":1}},"canonical_sha256":"4df67158f902a13273aa360e40ce49084d695677ac9aae1f32a509be8c7ea4f9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4df67158f902a13273aa360e40ce49084d695677ac9aae1f32a509be8c7ea4f9","first_computed_at":"2026-05-17T23:46:03.799396Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:46:03.799396Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BF+u8wCILd1DtA41R98On4aobh79JKmdVSiWsedgdvcy0S+1n3Btlv1Ai4x6nXcBOYOVS6C5V9UiOKzjrGzSCQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:46:03.800118Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.07666","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5b7639b506277f6655cd18da8e67aa55d760c6632ad6719b5d8e354c1b40eb3c","sha256:d9907f2331393257d40b5fe2b5771627be8ea89e8c45a3031b311ffa1cb068c1"],"state_sha256":"0b81d6906c27115ff300fbf7762e4512301e73bce5733b4842d02039b5331458"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0zhceurf07GqcDW6v8BqQ5WeHvcf5xcb0ujxvSfV+Y5R7lwHb2Hd5xO+JfFS4txbod02p8547+FF/+JSK9AXCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T01:58:29.323139Z","bundle_sha256":"975deb781c8c56577b4d00c27a96b05c19f8a1177e3cdbef764b32bc5fcde76a"}}