"dark fibre" meaning in English

{
  "forms": [
    {
      "form": "dark fiber",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "dark fibre (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
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      "examples": [
        {
          "bold_text_offsets": [
            [
              69,
              79
            ]
          ],
          "ref": "2018, James Bridle, “Complexity”, in The New Dark Age: Technology and the End of the Future, Verso Books, →ISBN, page 108:",
          "text": "Operating on stock exchanges became a matter of dark dealing, and of dark fibre.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Unused optical fibre that is available for use."
      ],
      "id": "en-dark_fibre-en-noun-EntzmnFd",
      "links": [
        [
          "optical fibre",
          "optical fibre"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "dark fibre"
}

{
  "forms": [
    {
      "form": "dark fiber",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "dark fibre (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              69,
              79
            ]
          ],
          "ref": "2018, James Bridle, “Complexity”, in The New Dark Age: Technology and the End of the Future, Verso Books, →ISBN, page 108:",
          "text": "Operating on stock exchanges became a matter of dark dealing, and of dark fibre.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Unused optical fibre that is available for use."
      ],
      "links": [
        [
          "optical fibre",
          "optical fibre"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "dark fibre"
}