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US 5,345,528 AGranted
Method for enhancing the pullout strength of polymer-coated optical fiber
AssigneeAT&T Bell Laboratories
InventorsHoward Edan Katz, Valerie J. Kuck, Marcia L. Schilling
Life of this patent
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Abstract
Applicants have discovered that by heating cured polymer-coated fiber at temperatures of 100.degree. C. or more, they can enhance the fiber pullout strength by 25% or more. This postcure heating can advantageously be done off-line by placing loosely wound fiber in a heated oven. Alternatively the postcure heating can be done on-line by reel-to-reel passage of the fiber through a heated furnace. Preferred temperatures are in the range 100.degree. C.-300.degree. C.
Claims6
A method for enhancing the pullout strength of polymer-coated optical fiber comprising the steps of:
- providing a cured, polymer-coated optical fiber;
- and
- heating said fiber at a temperature in the range 100.degree. C. to 300.degree. C. for a time sufficient to increase the pullout strength by at least 25%.
Dependencies are inferred from the claim text.