{
  "annotation_id": "4180fd3b-0b07-4af4-9a6b-538d1e9b08d0",
  "date_created": "2026-03-02T18:00:46.677000Z",
  "date_modified": "2026-03-02T18:00:46.677000Z",
  "file_hash": "e616b258be3f8f96c9eab46584478832bdf4a3071e10640e66eca245fc7bdfd7",
  "private": false,
  "record": {
    "abstract": "The modal cut-off is investigated experimentally in a series of high quality\nnon-linear photonic crystal fibers. We demonstrate a suitable measurement\ntechnique to determine the cut-off wavelength and verify it by inspecting the\nnear field of the modes that may be excited below and above the cut-off. We\nobserve a double peak structure in the cut-off spectra, which is attributed to\na splitting of the higher order modes. The cut-off is measured for seven\ndifferent fiber geometries with different pitches and relative hole size, and a\nvery good agreement with recent theoretical work is found.",
    "arxiv_id": "physics/0307009",
    "authors": [
      "J. R. Folkenberg",
      "N. A. Mortensen",
      "K. P. Hansen",
      "T. P. Hansen",
      "H. R. Simonsen",
      "C. Jakobsen"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1364/OL.28.001882",
    "journal_ref": "Opt. Lett. 28, 1882 (2003).",
    "title": "Experimental investigation of cut-off phenomena in non-linear photonic   crystal fibers",
    "url": "https://arxiv.org/abs/physics/0307009"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "7b404aac-4553-4a72-8702-12bfced26d50",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}