Process for manufacturing glass fiber optical waveguides

  • US 4,501,601 A
  • Filed: 05/05/1983
  • Issued: 02/26/1985
  • Est. Priority Date: 05/13/1982
  • Status: Expired due to Fees
First Claim
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1. A process for manufacturing glass preforms for use in drawing glass fiber optical waveguides therefrom, each having a core of a core material surrounded by a cladding of a cladding material with a refractive index lower than the maximum refractive index of the core material, comprising the steps ofreacting a first plurality of initial reactants in their vapor state with one another to produce particles of the core material,producing a complete cohesive core body, including forming a cohesive porous core body from said particles of the core material;

  • reacting a second plurality of initial reactants in their vapor state with one another to produce particles of the cladding material;

    providing a cohesive porous cladding body from said particles of the cladding material around said complete cohesive core body to thereby form a composite body, including accumulating the particles of the cladding material remotely from said complete cohesive core body, and forming the cohesive porous cladding body from the accumulated particles; and

    sintering the cohesive core body and the cohesive porous cladding body into the glass preform.

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