{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:2NPC5UJW2BNV24KQT7FOPGW2J6","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":"22f8550e8d2997afd5dde7c5b25e16cead0bd87660d1b506001c018c88853c13","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-12-28T10:24:33Z","title_canon_sha256":"14775f605e8285a7a293b49d9e26a84e594432f2537277ef2f7216658aeb65a6"},"schema_version":"1.0","source":{"id":"1612.08842","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1612.08842","created_at":"2026-05-18T00:53:47Z"},{"alias_kind":"arxiv_version","alias_value":"1612.08842v1","created_at":"2026-05-18T00:53:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1612.08842","created_at":"2026-05-18T00:53:47Z"},{"alias_kind":"pith_short_12","alias_value":"2NPC5UJW2BNV","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"2NPC5UJW2BNV24KQ","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"2NPC5UJW","created_at":"2026-05-18T12:29:55Z"}],"graph_snapshots":[{"event_id":"sha256:0afab2a9040649aff8beb38656fb890df99021ffcdc7b6e94a2f30b78072781a","target":"graph","created_at":"2026-05-18T00:53:47Z","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 develop a high-power narrow-linewidth fiber amplifier based on a tapered Yb-doped fiber. In the experiment, the narrow end of the tapered fiber is used as the input port of both pump source and signal light to form a robust all-fiber configuration. The stimulated Brillouin scattering (SBS) is effectively suppressed owing to its gradually increased mode area as well as continuously changed Brillouin frequency shift dependent on the core diameter. As a result, an output power of 260 W without SBS and mode instability (MI) is obtained, with a slope efficiency of 71.3 % and a narrow linewidth o","authors_text":"Chen Shi, Long Huang, Pu Zhou, Rumao Tao, Xiaolin Wang, Zichao Zhou","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-12-28T10:24:33Z","title":"Study on the power scaling and mode instability property in an all-fiber narrow-linewidth tapered fiber amplifier"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1612.08842","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:a1620fcb18f50f19d70e01b496aa626e796fd85671d2e0b321acc95d7949185a","target":"record","created_at":"2026-05-18T00:53:47Z","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":"22f8550e8d2997afd5dde7c5b25e16cead0bd87660d1b506001c018c88853c13","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-12-28T10:24:33Z","title_canon_sha256":"14775f605e8285a7a293b49d9e26a84e594432f2537277ef2f7216658aeb65a6"},"schema_version":"1.0","source":{"id":"1612.08842","kind":"arxiv","version":1}},"canonical_sha256":"d35e2ed136d05b5d71509fcae79ada4f91fc3ec2ba8142bc1a1f94931aba772b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d35e2ed136d05b5d71509fcae79ada4f91fc3ec2ba8142bc1a1f94931aba772b","first_computed_at":"2026-05-18T00:53:47.051105Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:53:47.051105Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LMYOAIBtxi3pVIi4USe7JNTirdsvTaIQI22WoyQT5OvOERkXHEwWMEiGQ8PG5xFNuGxwzv1PHtQQS3cckfnaBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:53:47.051542Z","signed_message":"canonical_sha256_bytes"},"source_id":"1612.08842","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a1620fcb18f50f19d70e01b496aa626e796fd85671d2e0b321acc95d7949185a","sha256:0afab2a9040649aff8beb38656fb890df99021ffcdc7b6e94a2f30b78072781a"],"state_sha256":"10c99789a7797c7d87974a545c16cb014e15f9d05763a3e1c9eb2f35a669fc7c"}