{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:6XROOKB27LLCZITXBLD2GRQ6ZF","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":"2a0e2e653bfc4c54c7d04a525f0adaf52dafefc1e3de2201526e5bead96dbddc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-06-10T22:52:56Z","title_canon_sha256":"328299f1629abdda4b457c924c455c64bfc05b02907865b5f5a2b6ea9b2ba117"},"schema_version":"1.0","source":{"id":"1306.2378","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1306.2378","created_at":"2026-05-18T03:21:21Z"},{"alias_kind":"arxiv_version","alias_value":"1306.2378v1","created_at":"2026-05-18T03:21:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1306.2378","created_at":"2026-05-18T03:21:21Z"},{"alias_kind":"pith_short_12","alias_value":"6XROOKB27LLC","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_16","alias_value":"6XROOKB27LLCZITX","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_8","alias_value":"6XROOKB2","created_at":"2026-05-18T12:27:36Z"}],"graph_snapshots":[{"event_id":"sha256:38b1e0dc262974394593493d8b2dda386a1b1e0bf1a92ce5f072ab0220a79ba0","target":"graph","created_at":"2026-05-18T03:21:21Z","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":"Significant effort in optical-fiber research has been put in recent years into realizing mode-division multiplexing (MDM) in conjunction with wavelength-division multiplexing (WDM) to enable further scaling of the communication bandwidth per fiber. In contrast almost all integrated photonics operate exclusively in the single-mode regime. MDM is rarely considered for integrated photonics due to the difficulty in coupling selectively to high-order modes which usually results in high inter-modal crosstalk. Here we show the first demonstration of simultaneous on-chip mode and wavelength division m","authors_text":"Carl B. Poitras, Christine Chen, Keren Bergman, Lian-Wee Luo, Lucas H. Gabrielli, Michal Lipson, Noam Ophir","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-06-10T22:52:56Z","title":"Simultaneous Mode and Wavelength Division Multiplexing On-Chip"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1306.2378","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:b33599c6c763c7306f1206b1ec943e2e41a91ae62e0da8c5f015ef3a5ff38769","target":"record","created_at":"2026-05-18T03:21:21Z","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":"2a0e2e653bfc4c54c7d04a525f0adaf52dafefc1e3de2201526e5bead96dbddc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-06-10T22:52:56Z","title_canon_sha256":"328299f1629abdda4b457c924c455c64bfc05b02907865b5f5a2b6ea9b2ba117"},"schema_version":"1.0","source":{"id":"1306.2378","kind":"arxiv","version":1}},"canonical_sha256":"f5e2e7283afad62ca2770ac7a3461ec95591e0c6205a19649ba0ec2d4856e2cd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f5e2e7283afad62ca2770ac7a3461ec95591e0c6205a19649ba0ec2d4856e2cd","first_computed_at":"2026-05-18T03:21:21.182831Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:21:21.182831Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"43n+jWTZRINgNJbIQ+kBVitNbMjr2w5bHSdSgraCUGFVqNtlKdLhfz9GFl+hhd84itEDHGdv/5r4xrWAWfY2Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:21:21.183361Z","signed_message":"canonical_sha256_bytes"},"source_id":"1306.2378","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b33599c6c763c7306f1206b1ec943e2e41a91ae62e0da8c5f015ef3a5ff38769","sha256:38b1e0dc262974394593493d8b2dda386a1b1e0bf1a92ce5f072ab0220a79ba0"],"state_sha256":"dd0bf577fb07f3b3d3bf7e0f2db650ce47d381fbe54ae773924a7ccb7ad54386"}