Patent ID: 6643440
Filing Date: 2003-11-04
Classification: C03C,Y10T

Abstract:
A temperature range adjusted coated optical fiber comprising:a) an optical fiber having an outer surface coated with a first polymer coating; b) a first interface between the optical fiber surface and the first polymer coating; c) a cured photopolymerizable second polymer coating in direct contact with and disposed concentrically about the first polymer coating; and d) a second interface between the first polymer coating and the second polymer coating; e) wherein, no delaminations at the first or second interfaces and no fractures within the first or second polymer coatings are observed by microscopic examination when an approximately two-meter long piece of the temperature range adjusted coated optical fiber, having two free ends, i) is wrapped under low tension on a 2.5 inch (6.4 cm) diameter aluminum tube having a wall thickness of 0.25 inches (0.64 cm), then ii) mounted with the tube horizontal and the free ends of the fiber are affixed to free-hanging 25 gram weights in a temperature-controlled chamber, iii) the chamber and tube being cycled approximately between âˆ’55Â° C. and 70Â°C. for a total of 30 cycles.