{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:DOMYJXPGJJM5S3HKAMAPTVE2ZC","short_pith_number":"pith:DOMYJXPG","canonical_record":{"source":{"id":"1505.00493","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-05-03T23:28:55Z","cross_cats_sorted":[],"title_canon_sha256":"4f9d2152cc8fafa2571d1aefb9324cb0ddf0aec7b86a9642de11cbe28cc2cc4d","abstract_canon_sha256":"02a93bf9eb7d83e466c8a5061898de54098b048fd43676a5a79597f10a16af86"},"schema_version":"1.0"},"canonical_sha256":"1b9984dde64a59d96cea0300f9d49ac8855b45480a4aeb16c1c7509c0f899f5d","source":{"kind":"arxiv","id":"1505.00493","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.00493","created_at":"2026-05-18T01:27:07Z"},{"alias_kind":"arxiv_version","alias_value":"1505.00493v2","created_at":"2026-05-18T01:27:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.00493","created_at":"2026-05-18T01:27:07Z"},{"alias_kind":"pith_short_12","alias_value":"DOMYJXPGJJM5","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_16","alias_value":"DOMYJXPGJJM5S3HK","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_8","alias_value":"DOMYJXPG","created_at":"2026-05-18T12:29:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:DOMYJXPGJJM5S3HKAMAPTVE2ZC","target":"record","payload":{"canonical_record":{"source":{"id":"1505.00493","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-05-03T23:28:55Z","cross_cats_sorted":[],"title_canon_sha256":"4f9d2152cc8fafa2571d1aefb9324cb0ddf0aec7b86a9642de11cbe28cc2cc4d","abstract_canon_sha256":"02a93bf9eb7d83e466c8a5061898de54098b048fd43676a5a79597f10a16af86"},"schema_version":"1.0"},"canonical_sha256":"1b9984dde64a59d96cea0300f9d49ac8855b45480a4aeb16c1c7509c0f899f5d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:27:07.704898Z","signature_b64":"A87ashmoVsWP95nibhJslZY5c9HhmuGMcZ0qS9O4DtW5xyHkc17aRWOC9/qU53eEIpm2jF+XSJpTJittJP0kDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1b9984dde64a59d96cea0300f9d49ac8855b45480a4aeb16c1c7509c0f899f5d","last_reissued_at":"2026-05-18T01:27:07.704334Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:27:07.704334Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1505.00493","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":"2026-05-18T01:27:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mhkkOuDhDyMBOtJt6FXNW/O14PAq4XMsiXduYYJxNqz/7ThOhCsB6JFx0wQ7z/Scdnr3/oyL/fDHE4Cv3q3TCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T13:55:38.134030Z"},"content_sha256":"4fb2ac0152decbe8dcf28450474fdd5c6b464f0c0fd6e5af66885b37031e978b","schema_version":"1.0","event_id":"sha256:4fb2ac0152decbe8dcf28450474fdd5c6b464f0c0fd6e5af66885b37031e978b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:DOMYJXPGJJM5S3HKAMAPTVE2ZC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Angular characteristics of a multimode fiber surface plasmon resonance sensor under wavelength interrogation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Ping Fan, Xin Hao, Xuejin Li, Xueming Hong, Yuzhi Chen, Zhixin Tan","submitted_at":"2015-05-03T23:28:55Z","abstract_excerpt":"In this paper the angular characteristics of a multimode fiber SPR sensor are theoretically investigated. By separating the contributions of beams incident at different angles, a compact model is presented to predict the shift of the resonance wavelength with respect to the angle and the environmental refractive index. The result suggests that the performance of conventional fiber SPR sensors can be substantially improved by optimizing the incident angle. Furthermore, our investigation suggests some problems in previous reports."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.00493","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":"2026-05-18T01:27:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Vq+T+4woBnwVWBtD2Jkhcc0DpnsoCpSDGiDgs4D0HMLnjo5h8U3zzgQpRsqlr6jtTBLNUrUo5/ZV8/M8d8I2DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T13:55:38.134384Z"},"content_sha256":"9c7042816781ee306811fea7ff8bfbb90882593a8d9293f0f8cb9add50170573","schema_version":"1.0","event_id":"sha256:9c7042816781ee306811fea7ff8bfbb90882593a8d9293f0f8cb9add50170573"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DOMYJXPGJJM5S3HKAMAPTVE2ZC/bundle.json","state_url":"https://pith.science/pith/DOMYJXPGJJM5S3HKAMAPTVE2ZC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DOMYJXPGJJM5S3HKAMAPTVE2ZC/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":"2026-06-26T13:55:38Z","links":{"resolver":"https://pith.science/pith/DOMYJXPGJJM5S3HKAMAPTVE2ZC","bundle":"https://pith.science/pith/DOMYJXPGJJM5S3HKAMAPTVE2ZC/bundle.json","state":"https://pith.science/pith/DOMYJXPGJJM5S3HKAMAPTVE2ZC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DOMYJXPGJJM5S3HKAMAPTVE2ZC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:DOMYJXPGJJM5S3HKAMAPTVE2ZC","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":"02a93bf9eb7d83e466c8a5061898de54098b048fd43676a5a79597f10a16af86","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-05-03T23:28:55Z","title_canon_sha256":"4f9d2152cc8fafa2571d1aefb9324cb0ddf0aec7b86a9642de11cbe28cc2cc4d"},"schema_version":"1.0","source":{"id":"1505.00493","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.00493","created_at":"2026-05-18T01:27:07Z"},{"alias_kind":"arxiv_version","alias_value":"1505.00493v2","created_at":"2026-05-18T01:27:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.00493","created_at":"2026-05-18T01:27:07Z"},{"alias_kind":"pith_short_12","alias_value":"DOMYJXPGJJM5","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_16","alias_value":"DOMYJXPGJJM5S3HK","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_8","alias_value":"DOMYJXPG","created_at":"2026-05-18T12:29:17Z"}],"graph_snapshots":[{"event_id":"sha256:9c7042816781ee306811fea7ff8bfbb90882593a8d9293f0f8cb9add50170573","target":"graph","created_at":"2026-05-18T01:27:07Z","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":"In this paper the angular characteristics of a multimode fiber SPR sensor are theoretically investigated. By separating the contributions of beams incident at different angles, a compact model is presented to predict the shift of the resonance wavelength with respect to the angle and the environmental refractive index. The result suggests that the performance of conventional fiber SPR sensors can be substantially improved by optimizing the incident angle. Furthermore, our investigation suggests some problems in previous reports.","authors_text":"Ping Fan, Xin Hao, Xuejin Li, Xueming Hong, Yuzhi Chen, Zhixin Tan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-05-03T23:28:55Z","title":"Angular characteristics of a multimode fiber surface plasmon resonance sensor under wavelength interrogation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.00493","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":"sha256:4fb2ac0152decbe8dcf28450474fdd5c6b464f0c0fd6e5af66885b37031e978b","target":"record","created_at":"2026-05-18T01:27:07Z","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":"02a93bf9eb7d83e466c8a5061898de54098b048fd43676a5a79597f10a16af86","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-05-03T23:28:55Z","title_canon_sha256":"4f9d2152cc8fafa2571d1aefb9324cb0ddf0aec7b86a9642de11cbe28cc2cc4d"},"schema_version":"1.0","source":{"id":"1505.00493","kind":"arxiv","version":2}},"canonical_sha256":"1b9984dde64a59d96cea0300f9d49ac8855b45480a4aeb16c1c7509c0f899f5d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1b9984dde64a59d96cea0300f9d49ac8855b45480a4aeb16c1c7509c0f899f5d","first_computed_at":"2026-05-18T01:27:07.704334Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:27:07.704334Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"A87ashmoVsWP95nibhJslZY5c9HhmuGMcZ0qS9O4DtW5xyHkc17aRWOC9/qU53eEIpm2jF+XSJpTJittJP0kDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:27:07.704898Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.00493","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4fb2ac0152decbe8dcf28450474fdd5c6b464f0c0fd6e5af66885b37031e978b","sha256:9c7042816781ee306811fea7ff8bfbb90882593a8d9293f0f8cb9add50170573"],"state_sha256":"fa0a99c11cea067093b139ef610afc0b016f4f56a7654ea674ba8721306d65b2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"81MJXuCh+jddl4kdM27347I5DT+btIj1j+MAZQUJrieFsJiNDJbvhfI5qws38soQDVBwc7vareS6IEVnPRCpAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-26T13:55:38.136376Z","bundle_sha256":"3b30b7cecdf17f1f4ff8488fd4b4d6053de9096bb399c050ccc3b77af5e36962"}}