{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:MWZVUHVIIRGUTIN4FLLSD3FVUT","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":"3b3eb5269ac1ac86f92593cf76678eb7c1e5807a7c9a49d670e11500fdda1efb","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-09-12T19:11:47Z","title_canon_sha256":"c3a9bf178cd46fbadc405b5c6298b4b6a2cc1d32d278bc1491503b26b877fe36"},"schema_version":"1.0","source":{"id":"1809.05603","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.05603","created_at":"2026-05-17T23:39:48Z"},{"alias_kind":"arxiv_version","alias_value":"1809.05603v1","created_at":"2026-05-17T23:39:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.05603","created_at":"2026-05-17T23:39:48Z"},{"alias_kind":"pith_short_12","alias_value":"MWZVUHVIIRGU","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"MWZVUHVIIRGUTIN4","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"MWZVUHVI","created_at":"2026-05-18T12:32:40Z"}],"graph_snapshots":[{"event_id":"sha256:29b2259e30f1b0d375b266a02cf98d86378b31d7175f49ae72602d48b5836ced","target":"graph","created_at":"2026-05-17T23:39:48Z","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 propose a compact MEMS-based optical autocorrelator based on a micromachined Michelson interferometer in silicon and the two-photon absorption non-linearity in a photodetector. The miniaturized autocorrelator has a scanning range of 1.2 ps and operates in the wavelength range of 1100-2000 nm. The device measures the interferometric autocorrelation due to its collinear nature, from which the intensity autocorrelation can be calculated. The field autocorrelation can also be measured, from which the optical pulse spectrum can be calculated. A theoretical model based on Gaussian beam propagatio","authors_text":"Ahmed M. Othman, Diaa A. Khalil, Hussein E. Kotb, Osama Terra, Yasser M. Sabry","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-09-12T19:11:47Z","title":"Towards On-Chip MEMS-Based Optical Autocorrelator"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.05603","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":"sha256:9ab194b52652c915b4207a2efb0b521902c74beed7aaa59eeee87d3ba7052aaf","target":"record","created_at":"2026-05-17T23:39:48Z","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":"3b3eb5269ac1ac86f92593cf76678eb7c1e5807a7c9a49d670e11500fdda1efb","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2018-09-12T19:11:47Z","title_canon_sha256":"c3a9bf178cd46fbadc405b5c6298b4b6a2cc1d32d278bc1491503b26b877fe36"},"schema_version":"1.0","source":{"id":"1809.05603","kind":"arxiv","version":1}},"canonical_sha256":"65b35a1ea8444d49a1bc2ad721ecb5a4da71594f8b48b50ada416c425f2350f5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"65b35a1ea8444d49a1bc2ad721ecb5a4da71594f8b48b50ada416c425f2350f5","first_computed_at":"2026-05-17T23:39:48.505224Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:39:48.505224Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"l1WOqyjgvR63zGVCkx59uAl4OjUtQi7bXvrSsWE6ZGSf3pKey2e9A/JDQ3DIgMvT3KRgzDamLrYHNg95kGQeAg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:39:48.505841Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.05603","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9ab194b52652c915b4207a2efb0b521902c74beed7aaa59eeee87d3ba7052aaf","sha256:29b2259e30f1b0d375b266a02cf98d86378b31d7175f49ae72602d48b5836ced"],"state_sha256":"202734cfb6bd350ece5dee5af049e857f0d7e37e13d7ce7fc50c8736b01733de"}