Process for the preparation of glass fiber optical waveguides with increased tensile strength
First Claim
Patent Images
1. A process for preparing a glass fiber optical waveguide with increased tensile strength comprising the steps of:
- A. providing a glass preform with a core and an outermost sheathing layer of a glass material, the glass material of the outermost layer has a lower coefficient of thermal expansion as compared with material underneath the outermost layer;
B. heating at least a portion of the glass preform to a temperature close to a melting temperature of the glass material; and
C. drawing a glass fiber optical waveguide from the heated portion of the preform using an increased tensile force in the range of 70 to 200 cN.
2 Assignments
0 Petitions
Accused Products
Abstract
For the production of glass fiber optical waveguides with increased tensile strength, these are drawn from a glass preform with a single-layer or multi-layer of additional sheathing of a glass material, with the material of at least the outermost layer in each case having a lower coefficient of thermal expansion as compared with the layer located underneath it or with the material of the preform. During the drawing process, the fiber is drawn from the preform in the cold state with increased tensile force of 70 to 200 cN.
-
Citations
12 Claims
-
1. A process for preparing a glass fiber optical waveguide with increased tensile strength comprising the steps of:
-
A. providing a glass preform with a core and an outermost sheathing layer of a glass material, the glass material of the outermost layer has a lower coefficient of thermal expansion as compared with material underneath the outermost layer; B. heating at least a portion of the glass preform to a temperature close to a melting temperature of the glass material; and C. drawing a glass fiber optical waveguide from the heated portion of the preform using an increased tensile force in the range of 70 to 200 cN. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
Specification