{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:MMKU5MMQYAKQJPU7CYJFIF24PU","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":"a5c6043c77e6570459d28ccbb54b1c398b0e8d30907bd17f1782077db4ca06f8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-02-26T17:43:36Z","title_canon_sha256":"56a92f9ee3461bc0243e58698f344efcdc7cda2256f061e3beef03a2af1efbff"},"schema_version":"1.0","source":{"id":"1602.08414","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.08414","created_at":"2026-05-18T01:11:48Z"},{"alias_kind":"arxiv_version","alias_value":"1602.08414v2","created_at":"2026-05-18T01:11:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.08414","created_at":"2026-05-18T01:11:48Z"},{"alias_kind":"pith_short_12","alias_value":"MMKU5MMQYAKQ","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_16","alias_value":"MMKU5MMQYAKQJPU7","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_8","alias_value":"MMKU5MMQ","created_at":"2026-05-18T12:30:32Z"}],"graph_snapshots":[{"event_id":"sha256:1d146c61575c8e35253c130b0c2174bd1676c876020c5ce741f2f4ce176b0a85","target":"graph","created_at":"2026-05-18T01:11:48Z","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":"A photonic integrated circuit for mode multiplexing and demultiplexing in a few-mode fiber is presented and demonstrated. Two 10 Gbit/s channels at the same wavelength and polarization are simultaneously transmitted over modes LP01 and LP11a of a few-mode fiber exploiting the integrated mode MUX and DEMUX. The proposed Indium-Phosphide-based circuits have a good coupling efficiency with fiber modes with mode-dependant loss smaller than 1 dB. Measured mode excitation cross-talk is as low as -20 dB and a channel cross-talk after propagation and demultiplexing of -15 dB is achieved. An operationa","authors_text":"Andrea Alippi, Andrea Melloni, Daniele Melati","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-02-26T17:43:36Z","title":"Reconfigurable photonic integrated mode (de)multiplexer for SDM fiber transmission"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.08414","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":"sha256:79fbe3b29aa07c8541d088fbbbd13b9220995f41db8533df5ae72b9de2c1c446","target":"record","created_at":"2026-05-18T01:11:48Z","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":"a5c6043c77e6570459d28ccbb54b1c398b0e8d30907bd17f1782077db4ca06f8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-02-26T17:43:36Z","title_canon_sha256":"56a92f9ee3461bc0243e58698f344efcdc7cda2256f061e3beef03a2af1efbff"},"schema_version":"1.0","source":{"id":"1602.08414","kind":"arxiv","version":2}},"canonical_sha256":"63154eb190c01504be9f161254175c7d2c0696044096e40504d5172db133449a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"63154eb190c01504be9f161254175c7d2c0696044096e40504d5172db133449a","first_computed_at":"2026-05-18T01:11:48.465405Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:11:48.465405Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UyAkaJBxtL1X9xsF1oO1f4CHd7fzGHNCcM85d3G6/XaOttRh2BzcSJBKV3dmSa5CsRuWXQrbuNqegm5Ao9L4Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:11:48.465761Z","signed_message":"canonical_sha256_bytes"},"source_id":"1602.08414","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:79fbe3b29aa07c8541d088fbbbd13b9220995f41db8533df5ae72b9de2c1c446","sha256:1d146c61575c8e35253c130b0c2174bd1676c876020c5ce741f2f4ce176b0a85"],"state_sha256":"93452105b17385522f52d243fe392a5ff1a072314f9ac385535883f86ed4c3c9"}