{
  "annotation_id": "8b162a4a-56d1-4039-8108-965fe6eb0512",
  "date_created": "2026-03-02T18:00:46.308000Z",
  "date_modified": "2026-03-02T18:00:46.308000Z",
  "file_hash": "60cc4be7aad49cc60f1d859f82b9cb542a0ba202719bf652d3cd1ad7ac4729cd",
  "private": false,
  "record": {
    "abstract": "Motivated by recent experimental work by Folkenberg et al. we consider the\neffect of weak disorder in the air-hole lattice of small-core photonic crystal\nfibers. We find that the broken symmetry leads to higher-order modes which have\ngeneric intensity distributions resembling those found in standard fibers with\nelliptical cores. This explains why recently reported experimental higher-order\nmode profiles appear very different from those calculated numerically for ideal\nphotonic crystal fibers with inversion and six-fold rotational symmetry. The\nsplitting of the four higher-order modes into two groups fully correlates with\nthe observation that these modes have different cut-offs.",
    "arxiv_id": "physics/0311106",
    "authors": [
      "N. A. Mortensen",
      "M. D. Nielsen",
      "J. R. Folkenberg",
      "K. P. Hansen",
      "J. Laegsgaard"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1088/1464-4258/6/2/011",
    "journal_ref": "J. Opt. A: Pure Appl. Opt. 6, 221 (2004)",
    "title": "Small-core photonic crystal fibers with weakly disordered air-hole   claddings",
    "url": "https://arxiv.org/abs/physics/0311106"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "98aad1d8-d0eb-4d02-94d0-783b5fd60f62",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}