{
  "abstract": "We demonstrate a compact, fully stabilized, all-polarization-maintaining (all-PM) Er:fiber optical frequency comb (OFC) implemented on a silica optical-cube platform. The optical comb module, including the oscillator, amplifier, spectral-broadening stage, 780-nm frequency-doubling branch, and f-to-2f interferometer, occupies a volume of 0.88 L. Without active temperature control, the free-running repetition frequency exhibits a peak-to-peak excursion of 75 Hz over 10 h, corresponding to 0.375 ppm. Under the same laboratory conditions, this excursion is 6.2 times smaller than that of a mechanically mounted non-PM reference comb. The amplified pulses are compressed to 94 fs and spectrally broadened in a PM highly nonlinear fiber. A coherent-population-trapping-based chip-scale atomic clock is employed for the first time as the radio-frequency reference for comb locking, thereby reducing the footprint of the microwave-reference subsystem. The resulting in-loop, optical-frequency-normalized tracking instability reaches 6.03E-17 at 1 s and 2.57E-18 at 10,000 s. These results demonstrate a compact comb architecture with reduced sensitivity to environmental perturbations, providing a practical route toward portable optical atomic clocks.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.14490",
  "author_total": 9,
  "authors": [
    {
      "name": "Zhendong Chen"
    },
    {
      "name": "Hanbo Xu"
    },
    {
      "name": "Ruoao Yang"
    },
    {
      "name": "Tianyu Liu"
    },
    {
      "name": "Hongshuo Wu"
    },
    {
      "name": "Duo Pan"
    },
    {
      "name": "Zhigang Zhang"
    },
    {
      "name": "Jianjun Wu"
    },
    {
      "name": "Jingbiao Chen"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/dgxw9y7f9tjj4.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.14490",
  "fulltext_url": null,
  "id": "dgxw9y7f9tjj4",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.14490",
  "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",
      "3107|Advanced Fiber Laser Technologies"
    ]
  ],
  "openalex": "W7221780535",
  "pdf_url": "https://arxiv.org/pdf/2610.14490",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-10",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/dgxw9y7f9tjj4.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:06Z",
      "native_id": "2610.14490",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.14490"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    }
  ],
  "title": "A Portable Optical Frequency Comb with Low Repetition-Rate Drift Based on \"Optical Cubes\"",
  "title_text": "A Portable Optical Frequency Comb with Low Repetition-Rate Drift Based on \"Optical Cubes\"",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:06Z",
  "url": "https://research.draconitic.com/paper/dgxw9y7f9tjj4",
  "venue": "arXiv",
  "versions": []
}