{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:GFRYL2W2DPUX5MG6KYSSM3Y7LQ","short_pith_number":"pith:GFRYL2W2","canonical_record":{"source":{"id":"1702.00260","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-01-31T10:48:39Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"8505a96f709861ef739c601b9b27c596142b55ae5204c1b02535ad438e551476","abstract_canon_sha256":"482b1bc564abba3d762bba28a3bf5f6daa9fa42bfb627f7d90661fca3ea003ae"},"schema_version":"1.0"},"canonical_sha256":"316385eada1be97eb0de5625266f1f5c19e63f4cd3fb2e37d4f078184cc72d2a","source":{"kind":"arxiv","id":"1702.00260","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.00260","created_at":"2026-05-18T00:51:34Z"},{"alias_kind":"arxiv_version","alias_value":"1702.00260v1","created_at":"2026-05-18T00:51:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.00260","created_at":"2026-05-18T00:51:34Z"},{"alias_kind":"pith_short_12","alias_value":"GFRYL2W2DPUX","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"GFRYL2W2DPUX5MG6","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"GFRYL2W2","created_at":"2026-05-18T12:31:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:GFRYL2W2DPUX5MG6KYSSM3Y7LQ","target":"record","payload":{"canonical_record":{"source":{"id":"1702.00260","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-01-31T10:48:39Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"8505a96f709861ef739c601b9b27c596142b55ae5204c1b02535ad438e551476","abstract_canon_sha256":"482b1bc564abba3d762bba28a3bf5f6daa9fa42bfb627f7d90661fca3ea003ae"},"schema_version":"1.0"},"canonical_sha256":"316385eada1be97eb0de5625266f1f5c19e63f4cd3fb2e37d4f078184cc72d2a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:51:34.786995Z","signature_b64":"m3U7rKq1J2UN0ZLDvIE1MR02c/35dUogyEcuWdKf9QNI0oeTjjlBjcg7GZGh1yFgDPYXeGCeSvcUUgoB9YUGCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"316385eada1be97eb0de5625266f1f5c19e63f4cd3fb2e37d4f078184cc72d2a","last_reissued_at":"2026-05-18T00:51:34.786645Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:51:34.786645Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1702.00260","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":"2026-05-18T00:51:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b9YMOdcquVh8j/BOsWGi6jujhYxBmpU4ecLj0SOzq8dC2iPhoEYlumV7qoD7Zajix8QggKYElmx/12Pm46pqAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T18:17:19.997222Z"},"content_sha256":"14448ddbc3c55eeb89f00cc87f97c26443591dcb9c67222a4636b5d4d2a4492f","schema_version":"1.0","event_id":"sha256:14448ddbc3c55eeb89f00cc87f97c26443591dcb9c67222a4636b5d4d2a4492f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:GFRYL2W2DPUX5MG6KYSSM3Y7LQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Machine learning based compact photonic structure design for strong light confinement","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.LG"],"primary_cat":"physics.optics","authors_text":"\\c{C}a\\u{g}r{\\i} Latifo\\u{g}lu, \\.Ibrahim Halil Giden, Mirbek Turduev, Y. Sinan Hanay","submitted_at":"2017-01-31T10:48:39Z","abstract_excerpt":"We present a novel approach based on machine learning for designing photonic structures. In particular, we focus on strong light confinement that allows the design of an efficient free-space-to-waveguide coupler which is made of Si- slab overlying on the top of silica substrate. The learning algorithm is implemented using bitwise square Si- cells and the whole optimized device has a footprint of $\\boldsymbol{2 \\, \\mu m \\times 1\\, \\mu m}$, which is the smallest size ever achieved numerically. To find the effect of Si- slab thickness on the sub-wavelength focusing and strong coupling characteris"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.00260","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":"2026-05-18T00:51:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zLbLz0PHSwewG6BWnELK+uVD/XTa3VI5LalNfQcgI0f9pfUzQYe9vtsxCY9SmwViX8teBLHpIEFNYb2//M8gBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T18:17:19.997583Z"},"content_sha256":"3681a42105b5730329768357773ace039bc446c8d3a588092efa7f8d55c90fc8","schema_version":"1.0","event_id":"sha256:3681a42105b5730329768357773ace039bc446c8d3a588092efa7f8d55c90fc8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GFRYL2W2DPUX5MG6KYSSM3Y7LQ/bundle.json","state_url":"https://pith.science/pith/GFRYL2W2DPUX5MG6KYSSM3Y7LQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GFRYL2W2DPUX5MG6KYSSM3Y7LQ/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":"2026-06-23T18:17:19Z","links":{"resolver":"https://pith.science/pith/GFRYL2W2DPUX5MG6KYSSM3Y7LQ","bundle":"https://pith.science/pith/GFRYL2W2DPUX5MG6KYSSM3Y7LQ/bundle.json","state":"https://pith.science/pith/GFRYL2W2DPUX5MG6KYSSM3Y7LQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GFRYL2W2DPUX5MG6KYSSM3Y7LQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:GFRYL2W2DPUX5MG6KYSSM3Y7LQ","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":"482b1bc564abba3d762bba28a3bf5f6daa9fa42bfb627f7d90661fca3ea003ae","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-01-31T10:48:39Z","title_canon_sha256":"8505a96f709861ef739c601b9b27c596142b55ae5204c1b02535ad438e551476"},"schema_version":"1.0","source":{"id":"1702.00260","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.00260","created_at":"2026-05-18T00:51:34Z"},{"alias_kind":"arxiv_version","alias_value":"1702.00260v1","created_at":"2026-05-18T00:51:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.00260","created_at":"2026-05-18T00:51:34Z"},{"alias_kind":"pith_short_12","alias_value":"GFRYL2W2DPUX","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"GFRYL2W2DPUX5MG6","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"GFRYL2W2","created_at":"2026-05-18T12:31:15Z"}],"graph_snapshots":[{"event_id":"sha256:3681a42105b5730329768357773ace039bc446c8d3a588092efa7f8d55c90fc8","target":"graph","created_at":"2026-05-18T00:51:34Z","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 present a novel approach based on machine learning for designing photonic structures. In particular, we focus on strong light confinement that allows the design of an efficient free-space-to-waveguide coupler which is made of Si- slab overlying on the top of silica substrate. The learning algorithm is implemented using bitwise square Si- cells and the whole optimized device has a footprint of $\\boldsymbol{2 \\, \\mu m \\times 1\\, \\mu m}$, which is the smallest size ever achieved numerically. To find the effect of Si- slab thickness on the sub-wavelength focusing and strong coupling characteris","authors_text":"\\c{C}a\\u{g}r{\\i} Latifo\\u{g}lu, \\.Ibrahim Halil Giden, Mirbek Turduev, Y. Sinan Hanay","cross_cats":["cs.LG"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-01-31T10:48:39Z","title":"Machine learning based compact photonic structure design for strong light confinement"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.00260","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":"sha256:14448ddbc3c55eeb89f00cc87f97c26443591dcb9c67222a4636b5d4d2a4492f","target":"record","created_at":"2026-05-18T00:51:34Z","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":"482b1bc564abba3d762bba28a3bf5f6daa9fa42bfb627f7d90661fca3ea003ae","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-01-31T10:48:39Z","title_canon_sha256":"8505a96f709861ef739c601b9b27c596142b55ae5204c1b02535ad438e551476"},"schema_version":"1.0","source":{"id":"1702.00260","kind":"arxiv","version":1}},"canonical_sha256":"316385eada1be97eb0de5625266f1f5c19e63f4cd3fb2e37d4f078184cc72d2a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"316385eada1be97eb0de5625266f1f5c19e63f4cd3fb2e37d4f078184cc72d2a","first_computed_at":"2026-05-18T00:51:34.786645Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:51:34.786645Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"m3U7rKq1J2UN0ZLDvIE1MR02c/35dUogyEcuWdKf9QNI0oeTjjlBjcg7GZGh1yFgDPYXeGCeSvcUUgoB9YUGCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:51:34.786995Z","signed_message":"canonical_sha256_bytes"},"source_id":"1702.00260","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:14448ddbc3c55eeb89f00cc87f97c26443591dcb9c67222a4636b5d4d2a4492f","sha256:3681a42105b5730329768357773ace039bc446c8d3a588092efa7f8d55c90fc8"],"state_sha256":"c2e955ce0031dfca4858ef06de16e6504c126efa2ad6f5ba313d662f9c1e7725"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VBY1FQPlzB05/IW2FV/eTs7H/HHh9yjxalEpjRK1bHQPHXpLjGDjYUMfNl90uRH1uWvbbali0jyc6NpQrTt1Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-23T18:17:19.999489Z","bundle_sha256":"50b2b0fc3f1e777cea6105db0debbc8abd107c8a1d48a30b3d49585f3f6cdf2e"}}