Improvements in or relating to glass fibres for optical devices

  • Inventors:
  • Assignees: Horizons Inc
  • Publication Date: November 30, 1966
  • Publication Number: GB-1049586-A


To allow fibre optic face plates to withstand higher bake-out temperatures, each glass fibre is clad with a tightly adherent transparent layer of a refractory oxide consisting of silica, alumina or zirconia or a mixture of two of three thereof. The fibres may be wet with a silica sol or high viscosity liquid concentrate formed by heat-treating solutions of organic salts of alumina or zirconia, then dried and heated at high temperature, e.g. between 1000 DEG and 1600 DEG F. in a non-reducing atmosphere. The refractory cladding may be applied directly to the glass core or used as an overlay on a low refractive index glass cladding already surrounding the core.




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Cited By (5)

    Publication numberPublication dateAssigneeTitle
    EP-1162181-A1December 12, 2001Alcatel Alsthom Compagnie Generale D'electricitePréformes et fibres optiques revêtues d'alumine avec ou sans silice
    FR-2425411-A1December 07, 1979Fujitsu LtdProcede de fabrication d'une fibre optique
    FR-2809720-A1December 07, 2001Cit AlcatelPreformes et fibres optiques revetues d'alumines et/ou de silice
    US-4563614-AJanuary 07, 1986English Electric Valve Company LimitedPhotocathode having fiber optic faceplate containing glass having a low annealing temperature
    WO-8303599-A1October 27, 1983Western Electric CoDoped optical fiber