{
  "abstract": "Wavelength-division multiplexing (WDM) is pivotal for expanding the capacity and functionality of photonic systems, from communications to computing. However, on-chip implementation for broadband operation is fundamentally limited by the narrow free spectral range (FSR) and inefficient drop transmission of conventional optical microcavities. Here, we transcend this limit with a scalable integrated WDM processing platform based on cascaded dual-sided coupled Fabry-Pérot add-drop resonators. This unit achieves a record-large FSR-free bandwidth (> 300 nm) and low insertion loss (< 0.5 dB), while enabling independent manipulation of monochromatic light in both the wavelength and intensity domains. Leveraging these performances, we architect programmable cores with up to 20 channels in a single bus waveguide to demonstrate application versatility by configuring as: a high-capacity on-chip WDM communication fabric (2.4-Tbps single-link WDM transmission and O-to-C-band multi-subband (de)triplexing), a reconfigurable optical processor (broadband and hitless wavelength-selective switching), and a parallel computing accelerator (theoretically capable of 1.28-TOPS convolution operations, 16-channel modulation). This work establishes a unified and versatile WDM processing platform that bridges high-speed optical communication with in-line computing, charting a scalable and backward-compatible path toward petabit-per-second-class links and hundreds of TOPS of on-chip computation, resolving a critical bottleneck for next-generation photonic systems.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.27545",
  "author_total": 20,
  "authors": [
    {
      "name": "Boshu Sun"
    },
    {
      "name": "Haojie Zhu"
    },
    {
      "name": "Ying Sun"
    },
    {
      "name": "Kunhao Lei"
    },
    {
      "name": "Zijia Wang"
    },
    {
      "name": "Kangjian Bao"
    },
    {
      "name": "Weiqi Lu"
    },
    {
      "name": "Yuhao Fang"
    },
    {
      "name": "Yuting Ye"
    },
    {
      "name": "Danyang Hao"
    },
    {
      "name": "Qingyan Deng"
    },
    {
      "name": "Zequn Chen"
    },
    {
      "name": "Yingchun Wu"
    },
    {
      "name": "Maoliang Wei"
    },
    {
      "name": "Wei Cao"
    },
    {
      "name": "Xu Sun"
    },
    {
      "name": "Qicheng Zhang"
    },
    {
      "name": "Hongtao Lin"
    },
    {
      "name": "William Shieh"
    },
    {
      "name": "Lan Li"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/4ard37bnj0jc1.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.27545",
  "fulltext_url": null,
  "id": "4ard37bnj0jc1",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.27545",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.optics"
    ],
    [
      "openalex",
      "2208|Photonic and Optical Devices"
    ]
  ],
  "openalex": "W7214171806",
  "pdf_url": "https://arxiv.org/pdf/2609.27545",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-23",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/4ard37bnj0jc1.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:56Z",
      "native_id": "2609.27545",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.27545"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "Programmable and scalable on-chip WDM processing platform enabled by cascaded FSR-free resonators",
  "title_text": "Programmable and scalable on-chip WDM processing platform enabled by cascaded FSR-free resonators",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:56Z",
  "url": "https://research.draconitic.com/paper/4ard37bnj0jc1",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1038/s41377-026-02490-4",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}