{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:JWJO6DSQB6NR3VPVGPKNSCGEKY","short_pith_number":"pith:JWJO6DSQ","canonical_record":{"source":{"id":"1711.02500","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2017-11-01T01:09:35Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"b7fb8dc960b2e1bc9438874801e5c2f1e8eab6204e09d064be9691ec2a1778cc","abstract_canon_sha256":"1076e443c54f45804a485c3de660f8a7f0abba6cf6886f80c1043c93ba18a83f"},"schema_version":"1.0"},"canonical_sha256":"4d92ef0e500f9b1dd5f533d4d908c4561e44d27a81af99742b07cdb122ebaddf","source":{"kind":"arxiv","id":"1711.02500","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.02500","created_at":"2026-05-18T00:31:07Z"},{"alias_kind":"arxiv_version","alias_value":"1711.02500v1","created_at":"2026-05-18T00:31:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.02500","created_at":"2026-05-18T00:31:07Z"},{"alias_kind":"pith_short_12","alias_value":"JWJO6DSQB6NR","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_16","alias_value":"JWJO6DSQB6NR3VPV","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_8","alias_value":"JWJO6DSQ","created_at":"2026-05-18T12:31:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:JWJO6DSQB6NR3VPVGPKNSCGEKY","target":"record","payload":{"canonical_record":{"source":{"id":"1711.02500","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2017-11-01T01:09:35Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"b7fb8dc960b2e1bc9438874801e5c2f1e8eab6204e09d064be9691ec2a1778cc","abstract_canon_sha256":"1076e443c54f45804a485c3de660f8a7f0abba6cf6886f80c1043c93ba18a83f"},"schema_version":"1.0"},"canonical_sha256":"4d92ef0e500f9b1dd5f533d4d908c4561e44d27a81af99742b07cdb122ebaddf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:31:07.766125Z","signature_b64":"u0xQEoHGoTc6eMCZB0v/wotH2BubzFYtSbyKoIX2O2ftV1LLA3KSY4RK794+vEEYQvJqAQMfRTeYXtWaAnWNBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4d92ef0e500f9b1dd5f533d4d908c4561e44d27a81af99742b07cdb122ebaddf","last_reissued_at":"2026-05-18T00:31:07.765134Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:31:07.765134Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1711.02500","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":"2026-05-18T00:31:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ygBk38P7sn2tOleoEoJBTn16n8sMmHvmqwTEFjC/+QjzO+5zlAQQwMUZvXiK0CNUY82WuLKsHMo6EaXDEZydDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T10:40:59.712123Z"},"content_sha256":"f4dc20cb56963b15accea942274ce24a7a19c1d3257eebdddcbf5318e4b3030a","schema_version":"1.0","event_id":"sha256:f4dc20cb56963b15accea942274ce24a7a19c1d3257eebdddcbf5318e4b3030a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:JWJO6DSQB6NR3VPVGPKNSCGEKY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Integrated All-Optical Fast Fourier Transform: Design and Sensitivity Analysis","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"eess.SP","authors_text":"David Hillerkuss, Hani Nejadriahi, Jonathan K. George, Volker J. Sorger","submitted_at":"2017-11-01T01:09:35Z","abstract_excerpt":"The fast Fourier transform, FFT, is a useful and prevalent algorithm in signal processing. It characterizes the spectral components of a signal, or is used in combination with other operations to perform more complex computations such as filtering, convolution, and correlation. Digital FFTs are limited in speed by the necessity of moving charge within logic gates. An analog temporal FFT in fiber optics has been demonstrated with highest data bandwidth. However, the implementation with discrete fiber optic FFT components is bulky. Here, we present and analyze a design of an optical FFT in Silic"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.02500","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":"2026-05-18T00:31:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Do7XSJzfLP57i5o4N0VIbDXL0m7rW4c1Q2LUE1Co9x8Cif5DSEUjk94rYazepNhDvJCgLI5KfVuiIgXNpr4fCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T10:40:59.712492Z"},"content_sha256":"10c0ed1af9d0dc49f86b2d1c1ca5c6dc8e3e4c9bea93e3c5aa40d9c058c386ca","schema_version":"1.0","event_id":"sha256:10c0ed1af9d0dc49f86b2d1c1ca5c6dc8e3e4c9bea93e3c5aa40d9c058c386ca"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JWJO6DSQB6NR3VPVGPKNSCGEKY/bundle.json","state_url":"https://pith.science/pith/JWJO6DSQB6NR3VPVGPKNSCGEKY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JWJO6DSQB6NR3VPVGPKNSCGEKY/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":"2026-05-30T10:40:59Z","links":{"resolver":"https://pith.science/pith/JWJO6DSQB6NR3VPVGPKNSCGEKY","bundle":"https://pith.science/pith/JWJO6DSQB6NR3VPVGPKNSCGEKY/bundle.json","state":"https://pith.science/pith/JWJO6DSQB6NR3VPVGPKNSCGEKY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JWJO6DSQB6NR3VPVGPKNSCGEKY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:JWJO6DSQB6NR3VPVGPKNSCGEKY","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":"1076e443c54f45804a485c3de660f8a7f0abba6cf6886f80c1043c93ba18a83f","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2017-11-01T01:09:35Z","title_canon_sha256":"b7fb8dc960b2e1bc9438874801e5c2f1e8eab6204e09d064be9691ec2a1778cc"},"schema_version":"1.0","source":{"id":"1711.02500","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.02500","created_at":"2026-05-18T00:31:07Z"},{"alias_kind":"arxiv_version","alias_value":"1711.02500v1","created_at":"2026-05-18T00:31:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.02500","created_at":"2026-05-18T00:31:07Z"},{"alias_kind":"pith_short_12","alias_value":"JWJO6DSQB6NR","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_16","alias_value":"JWJO6DSQB6NR3VPV","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_8","alias_value":"JWJO6DSQ","created_at":"2026-05-18T12:31:24Z"}],"graph_snapshots":[{"event_id":"sha256:10c0ed1af9d0dc49f86b2d1c1ca5c6dc8e3e4c9bea93e3c5aa40d9c058c386ca","target":"graph","created_at":"2026-05-18T00:31:07Z","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":"The fast Fourier transform, FFT, is a useful and prevalent algorithm in signal processing. It characterizes the spectral components of a signal, or is used in combination with other operations to perform more complex computations such as filtering, convolution, and correlation. Digital FFTs are limited in speed by the necessity of moving charge within logic gates. An analog temporal FFT in fiber optics has been demonstrated with highest data bandwidth. However, the implementation with discrete fiber optic FFT components is bulky. Here, we present and analyze a design of an optical FFT in Silic","authors_text":"David Hillerkuss, Hani Nejadriahi, Jonathan K. George, Volker J. Sorger","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2017-11-01T01:09:35Z","title":"Integrated All-Optical Fast Fourier Transform: Design and Sensitivity Analysis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.02500","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:f4dc20cb56963b15accea942274ce24a7a19c1d3257eebdddcbf5318e4b3030a","target":"record","created_at":"2026-05-18T00:31:07Z","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":"1076e443c54f45804a485c3de660f8a7f0abba6cf6886f80c1043c93ba18a83f","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2017-11-01T01:09:35Z","title_canon_sha256":"b7fb8dc960b2e1bc9438874801e5c2f1e8eab6204e09d064be9691ec2a1778cc"},"schema_version":"1.0","source":{"id":"1711.02500","kind":"arxiv","version":1}},"canonical_sha256":"4d92ef0e500f9b1dd5f533d4d908c4561e44d27a81af99742b07cdb122ebaddf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4d92ef0e500f9b1dd5f533d4d908c4561e44d27a81af99742b07cdb122ebaddf","first_computed_at":"2026-05-18T00:31:07.765134Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:31:07.765134Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"u0xQEoHGoTc6eMCZB0v/wotH2BubzFYtSbyKoIX2O2ftV1LLA3KSY4RK794+vEEYQvJqAQMfRTeYXtWaAnWNBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:31:07.766125Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.02500","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f4dc20cb56963b15accea942274ce24a7a19c1d3257eebdddcbf5318e4b3030a","sha256:10c0ed1af9d0dc49f86b2d1c1ca5c6dc8e3e4c9bea93e3c5aa40d9c058c386ca"],"state_sha256":"f558fa3bb3d8491850cdc4fc776ef3f04a88d253a4622a5ec1612193952d6733"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cnpxegdu1W1LdLZPzLBaNj4eyduVFCNVO1E564WsPLS+oU31sStGYq8YaYA3T0m2rmCA7fnvIARp4wT3/ppcCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T10:40:59.714727Z","bundle_sha256":"e45ae995ab519321d393a0848826670277507e4bef464f5bc21aa6d13a01a5cb"}}