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The cited work could not be located through any authoritative source.","detected_doi":"10.1109/jlt.2022.3164401","detected_arxiv_id":null,"ref_index":24,"audited_at":"2026-07-10T08:01:59.882412Z"},{"detector":"doi_compliance","finding_type":"unresolvable_identifier","severity":"critical","verdict_class":"cross_source","note":"Identifier '10.1109/jlt.2023.3235612' is syntactically valid but the DOI registry (doi.org) returned 404, and Crossref / OpenAlex / internal corpus also have no record. The cited work could not be located through any authoritative source.","detected_doi":"10.1109/jlt.2023.3235612","detected_arxiv_id":null,"ref_index":12,"audited_at":"2026-07-10T08:01:59.882412Z"},{"detector":"doi_compliance","finding_type":"recoverable_identifier","severity":"advisory","verdict_class":"incontrovertible","note":"DOI in the printed bibliography is fragmented by whitespace or line breaks. 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The cited work could not be located through any authoritative source.","detected_doi":"10.1109/jlt.2021.3061223","detected_arxiv_id":null,"ref_index":23,"audited_at":"2026-07-10T08:01:59.882412Z"},{"detector":"doi_compliance","finding_type":"unresolvable_identifier","severity":"critical","verdict_class":"cross_source","note":"Identifier '10.1109/jlt.2022.3141108' is syntactically valid but the DOI registry (doi.org) returned 404, and Crossref / OpenAlex / internal corpus also have no record. The cited work could not be located through any authoritative source.","detected_doi":"10.1109/jlt.2022.3141108","detected_arxiv_id":null,"ref_index":22,"audited_at":"2026-07-10T08:01:59.882412Z"},{"detector":"doi_compliance","finding_type":"unresolvable_identifier","severity":"critical","verdict_class":"cross_source","note":"Identifier '10.1109/mcom.001.2200385' is syntactically valid but the DOI registry (doi.org) returned 404, and Crossref / OpenAlex / internal corpus also have no record. The cited work could not be located through any authoritative source.","detected_doi":"10.1109/mcom.001.2200385","detected_arxiv_id":null,"ref_index":30,"audited_at":"2026-07-10T08:01:59.882412Z"},{"detector":"doi_compliance","finding_type":"unresolvable_identifier","severity":"critical","verdict_class":"cross_source","note":"Identifier '10.1007/s12200-023-00058-7' is syntactically valid but the DOI registry (doi.org) returned 404, and Crossref / OpenAlex / internal corpus also have no record. The cited work could not be located through any authoritative source.","detected_doi":"10.1007/s12200-023-00058-7","detected_arxiv_id":null,"ref_index":33,"audited_at":"2026-07-10T08:01:59.882412Z"},{"detector":"doi_compliance","finding_type":"unresolvable_identifier","severity":"critical","verdict_class":"cross_source","note":"Identifier '10.1109/lpt.2011.2148107' is syntactically valid but the DOI registry (doi.org) returned 404, and Crossref / OpenAlex / internal corpus also have no record. The cited work could not be located through any authoritative source.","detected_doi":"10.1109/lpt.2011.2148107","detected_arxiv_id":null,"ref_index":35,"audited_at":"2026-07-10T08:01:59.882412Z"},{"detector":"doi_compliance","finding_type":"unresolvable_identifier","severity":"critical","verdict_class":"cross_source","note":"Identifier '10.1109/jlt.2020.2978543' is syntactically valid but the DOI registry (doi.org) returned 404, and Crossref / OpenAlex / internal corpus also have no record. The cited work could not be located through any authoritative source.","detected_doi":"10.1109/jlt.2020.2978543","detected_arxiv_id":null,"ref_index":36,"audited_at":"2026-07-10T08:01:59.882412Z"},{"detector":"doi_compliance","finding_type":"unresolvable_identifier","severity":"critical","verdict_class":"cross_source","note":"Identifier '10.1109/jlt.2019.2954992' is syntactically valid but the DOI registry (doi.org) returned 404, and Crossref / OpenAlex / internal corpus also have no record. The cited work could not be located through any authoritative source.","detected_doi":"10.1109/jlt.2019.2954992","detected_arxiv_id":null,"ref_index":38,"audited_at":"2026-07-10T08:01:59.882412Z"}],"snapshot_sha256":"55f54b3e44f7cf3b9831991a4b9e87aff9a9ca277f63fb382ac5369b411a2c70"},"events":[{"event_id":11913,"event_type":"pith.integrity.v1","payload_sha256":"87c233f0ae60fe90d469ed3e1b7985f0c8a511c5c8dddf85edd06b4e4efd911d","signature_b64":"qVtPe8thD846iKezGbtGdm3RD/oWQS+FHexS544ytJzaSiWwQQaATFtJnE1TyDHrxm2xE6+Ci3j3TkBHEJZ4Cg==","signing_key_id":"pith-v1-2026-05","created_at":"2026-07-10T08:04:02.201932+00:00","payload":{"note":"Identifier '10.1109/jlt.2019.2954992' is syntactically valid but the DOI registry (doi.org) returned 404, and Crossref / OpenAlex / internal corpus also have no record. The cited work could not be located through any authoritative source.","snippet":"Junwen Zhang, Jianjun Yu, Jun Shan Wey, et al . 2020. 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The cited work could not be located through any authoritative source.","snippet":"Jun Shan Wey, Xiang Liu, and Ed Harstead. 2020. Design and Opti- mization of O-Band DWDM Transmission Systems for High-Speed Mobile Fronthaul and Data Center Networks.Journal of Lightwave Technology38, 11 (2020), 2913–2921. doi:10.1109/JLT.","arxiv_id":"2607.08407","detector":"doi_compliance","evidence":{"doi":"10.1109/jlt.2020.2978543","arxiv_id":null,"ref_index":36,"raw_excerpt":"Jun Shan Wey, Xiang Liu, and Ed Harstead. 2020. 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The cited work could not be located through any authoritative source.","snippet":"Benjamin C. Webb, Tom Farrell, and Robert J. Manning. 2011. All- Optical 2R Regeneration Using Cross-Phase Modulation in a Highly Non-Linear Fiber and an Optical Filter.IEEE Photonics Technology Letters23, 14 (2011), 983–985. doi:10.1109/LP","arxiv_id":"2607.08407","detector":"doi_compliance","evidence":{"doi":"10.1109/lpt.2011.2148107","arxiv_id":null,"ref_index":35,"raw_excerpt":"Benjamin C. Webb, Tom Farrell, and Robert J. Manning. 2011. All- Optical 2R Regeneration Using Cross-Phase Modulation in a Highly Non-Linear Fiber and an Optical Filter.IEEE Photonics Technology Letters23, 14 (2011), 983–985. doi:10.1109/LPT.2011.2148107","verdict_class":"cross_source","checked_sources":["crossref_by_doi","openalex_by_doi","doi_org_head"]},"severity":"critical","ref_index":35,"audited_at":"2026-07-10T08:01:59.882412Z","event_type":"pith.integrity.v1","detected_doi":"10.1109/lpt.2011.2148107","detector_url":"https://pith.science/pith-integrity-protocol#doi_compliance","external_url":null,"finding_type":"unresolvable_identifier","evidence_hash":"af87983d062f11212a740a154769990c099f6cb6c9f7898decb4014f8f5b6d31","paper_version":1,"verdict_class":"cross_source","resolved_title":null,"detector_version":"1.0.0","detected_arxiv_id":null}},{"event_id":11910,"event_type":"pith.integrity.v1","payload_sha256":"31bc040356fa7f17088ecf740444bbfe7c35034b100744bef4c18beb16660b40","signature_b64":"7moHjJAxyNBODvWCyr0MbKkFlzoWwwssh1EopKauxWPoEd6fi0oEoWNctOSKf78htynDTupX9HhFrkOEXxrGAA==","signing_key_id":"pith-v1-2026-05","created_at":"2026-07-10T08:04:02.198422+00:00","payload":{"note":"Identifier '10.1007/s12200-023-00058-7' is syntactically valid but the DOI registry (doi.org) returned 404, and Crossref / OpenAlex / internal corpus also have no record. The cited work could not be located through any authoritative source.","snippet":"Min Tan, Jiang Xu, Siyang Liu, et al. 2023. Co-packaged optics (CPO): status, challenges, and solutions.Frontiers of Optoelectronics16, 1 (2023), 9. doi:10.1007/s12200-023-00058-7","arxiv_id":"2607.08407","detector":"doi_compliance","evidence":{"doi":"10.1007/s12200-023-00058-7","arxiv_id":null,"ref_index":33,"raw_excerpt":"Min Tan, Jiang Xu, Siyang Liu, et al. 2023. 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A longer candidate (10.1109/LPT.2019.2918841) was visible in the surrounding text but could not be confirmed against doi.org as printed.","snippet":"Kristian Stubkjaer, Juerg Leuthold, and Charles H. Joyner. 2019. Power Consumption Dynamics and Thermal Biasing of All-Optical 2R Regen- erators Based on Semiconductor Optical Amplifiers.IEEE Photonics Technology Letters31, 14 (2019), 1143–","arxiv_id":"2607.08407","detector":"doi_compliance","evidence":{"ref_index":31,"verdict_class":"incontrovertible","resolved_title":null,"printed_excerpt":"Kristian Stubkjaer, Juerg Leuthold, and Charles H. Joyner. 2019. Power Consumption Dynamics and Thermal Biasing of All-Optical 2R Regen- erators Based on Semiconductor Optical Amplifiers.IEEE Photonics Technology Letters31, 14 (2019), 1143–","reconstructed_doi":"10.1109/LPT.2019.2918841"},"severity":"advisory","ref_index":31,"audited_at":"2026-07-10T08:01:59.882412Z","event_type":"pith.integrity.v1","detected_doi":"10.1109/LPT.2019.2918841","detector_url":"https://pith.science/pith-integrity-protocol#doi_compliance","external_url":null,"finding_type":"recoverable_identifier","evidence_hash":"4e3b9a534ff5b6bce549ce327c3b91d6eaf480332d4c1afa7ac2c28d9c8b3286","paper_version":1,"verdict_class":"incontrovertible","resolved_title":null,"detector_version":"1.0.0","detected_arxiv_id":null}},{"event_id":11908,"event_type":"pith.integrity.v1","payload_sha256":"4f05f7ff040a305bd2e130ca35329d2d69e4bf70c02112df1faec90ecdbb01df","signature_b64":"gA06MX6NXEwilqcHTjDEPEsF1+mfhs5JkDv68Zn9+9nk2xAfuEFdkZywmPni1YIyFcNtQqlRkVGeySS/ebrjCg==","signing_key_id":"pith-v1-2026-05","created_at":"2026-07-10T08:04:02.196018+00:00","payload":{"note":"Identifier '10.1109/mcom.001.2200385' is syntactically valid but the DOI registry (doi.org) returned 404, and Crossref / OpenAlex / internal corpus also have no record. The cited work could not be located through any authoritative source.","snippet":"Richard Soref, Roberto De Rose, Ran Ding, et al. 2023. Co-Packaged Optics for Next-Generation Data Centers: Power Efficiency and Archi- tecture Analysis.IEEE Communications Magazine61, 4 (2023), 42–48. doi:10.1109/MCOM.001.2200385","arxiv_id":"2607.08407","detector":"doi_compliance","evidence":{"doi":"10.1109/mcom.001.2200385","arxiv_id":null,"ref_index":30,"raw_excerpt":"Richard Soref, Roberto De Rose, Ran Ding, et al. 2023. 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The cited work could not be located through any authoritative source.","snippet":"M. Nishi, K. Takada, T. Mori, and T. Hasegawa. 2022. High-Gain O- Band Praseodymium-Doped Fluoride Fiber Amplifiers for High-Speed Data Center Interconnects.Journal of Lightwave Technology40, 14 (2022), 4689–4696. doi:10.1109/JLT.2022.31644","arxiv_id":"2607.08407","detector":"doi_compliance","evidence":{"doi":"10.1109/jlt.2022.3164401","arxiv_id":null,"ref_index":24,"raw_excerpt":"M. Nishi, K. Takada, T. Mori, and T. Hasegawa. 2022. 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The cited work could not be located through any authoritative source.","snippet":"Takashi Mori, Kazumasa Bro Takada, Hanawa Nishi, and Takemi Hasegawa. 2021. O-Band Praseodymium-Doped Fluoride Fiber Am- plifiers for Multi-Wavelength High-Speed Data Center Intercon- nects.Journal of Lightwave Technology39, 12 (2021), 3932","arxiv_id":"2607.08407","detector":"doi_compliance","evidence":{"doi":"10.1109/jlt.2021.3061223","arxiv_id":null,"ref_index":23,"raw_excerpt":"Takashi Mori, Kazumasa Bro Takada, Hanawa Nishi, and Takemi Hasegawa. 2021. 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The cited work could not be located through any authoritative source.","snippet":"Takashi Mori, Kazumasa Takada, and Takemi Hasegawa. 2022. Ultra- Low Latency O-Band Praseodymium-Doped Fiber Amplifiers for Data Center Interconnects.Journal of Lightwave Technology40, 8 (2022), 2445–2452. doi:10.1109/JLT.2022.3141108","arxiv_id":"2607.08407","detector":"doi_compliance","evidence":{"doi":"10.1109/jlt.2022.3141108","arxiv_id":null,"ref_index":22,"raw_excerpt":"Takashi Mori, Kazumasa Takada, and Takemi Hasegawa. 2022. 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The cited work could not be located through any authoritative source.","snippet":"Antonio Mecozzi, Mark Shtaif, and Cristian Antonelli. 2018. All- Optical 2R and 3R Regeneration in Regional Optical Fiber Communica- tion Systems.Journal of Lightwave Technology36, 7 (2018), 1411–1420. doi:10.1109/JLT.2017.2789104","arxiv_id":"2607.08407","detector":"doi_compliance","evidence":{"doi":"10.1109/jlt.2017.2789104","arxiv_id":null,"ref_index":20,"raw_excerpt":"Antonio Mecozzi, Mark Shtaif, and Cristian Antonelli. 2018. 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The cited work could not be located through any authoritative source.","snippet":"Ibrahim Guler, Chen Sun, and Rajeev J. Ram. 2023. Laser Source Constraints and Wall-Plug Efficiency Optimization for High-Density Silicon Photonics Interconnects.Journal of Lightwave Technology41, 8 (2023), 2411–2420. doi:10.1109/JLT.2023.3","arxiv_id":"2607.08407","detector":"doi_compliance","evidence":{"doi":"10.1109/jlt.2023.3235612","arxiv_id":null,"ref_index":12,"raw_excerpt":"Ibrahim Guler, Chen Sun, and Rajeev J. Ram. 2023. 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A longer candidate (10.1109/TCSI.2022.3168941) was visible in the surrounding text but could not be confirmed against doi.org as printed.","snippet":"Kun-Zhi Chang, Linhai Zhang, Tiejun Wang, and Intel Communica- tions Group. 2022. Ultra-Low-Latency Hardware Architectures for Reed-Solomon Forward Error Correction in Next-Generation Optical and Electrical Interconnects.IEEE Transactions o","arxiv_id":"2607.08407","detector":"doi_compliance","evidence":{"ref_index":7,"verdict_class":"incontrovertible","resolved_title":null,"printed_excerpt":"Kun-Zhi Chang, Linhai Zhang, Tiejun Wang, and Intel Communica- tions Group. 2022. Ultra-Low-Latency Hardware Architectures for Reed-Solomon Forward Error Correction in Next-Generation Optical and Electrical Interconnects.IEEE Transactions o","reconstructed_doi":"10.1109/TCSI.2022.3168941"},"severity":"advisory","ref_index":7,"audited_at":"2026-07-10T08:01:59.882412Z","event_type":"pith.integrity.v1","detected_doi":"10.1109/TCSI.2022.3168941","detector_url":"https://pith.science/pith-integrity-protocol#doi_compliance","external_url":null,"finding_type":"recoverable_identifier","evidence_hash":"d8e790ae410661f80b91d0e2b61f3ccabcd246b81dd9c69f70b6db9e57478f43","paper_version":1,"verdict_class":"incontrovertible","resolved_title":null,"detector_version":"1.0.0","detected_arxiv_id":null}},{"event_id":11901,"event_type":"pith.integrity.v1","payload_sha256":"a2e832622f08af08e16bd3ca076cb91b3193f299bb3822f4430a3f108cda1dd6","signature_b64":"FBM30pBFOCgnHziTrgt393fO2XIrEjaWBnRQ2Wgmmrbmzr5trgPOL3AcHSXaVvLXfjYd8OEq98wh/0E1S4etBQ==","signing_key_id":"pith-v1-2026-05","created_at":"2026-07-10T08:04:02.178682+00:00","payload":{"note":"Identifier '10.1109/hpca53960.2022.00027' is syntactically valid but the DOI registry (doi.org) returned 404, and Crossref / OpenAlex / internal corpus also have no record. The cited work could not be located through any authoritative source.","snippet":"doi:10.1109/HPCA53960.2022.00027","arxiv_id":"2607.08407","detector":"doi_compliance","evidence":{"doi":"10.1109/hpca53960.2022.00027","arxiv_id":null,"ref_index":4,"raw_excerpt":"doi:10.1109/HPCA53960.2022.00027","verdict_class":"cross_source","checked_sources":["crossref_by_doi","openalex_by_doi","doi_org_head"]},"severity":"critical","ref_index":4,"audited_at":"2026-07-10T08:01:59.882412Z","event_type":"pith.integrity.v1","detected_doi":"10.1109/hpca53960.2022.00027","detector_url":"https://pith.science/pith-integrity-protocol#doi_compliance","external_url":null,"finding_type":"unresolvable_identifier","evidence_hash":"faaf8433fb72dbccac79aa2c32c242f5d2b050cef503af0899ebb0fa8db98f2e","paper_version":1,"verdict_class":"cross_source","resolved_title":null,"detector_version":"1.0.0","detected_arxiv_id":null}}],"endpoint_self":"/pith/2607.08407/integrity.json","protocol_url":"https://pith.science/pith-integrity-protocol"}