High Heat-Resistant Optical Fiber Coated with Thermal-Cured Type Silicone and Fluorine Polymer,
SUMITOMO ELECTRIC INDUSTRIES LTD YOKOHAMA (JAPAN)
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The coating technology of the optical fiber which has physical and optical stability at high temperature atmosphere is discussed. Thermal-cured type silicone and PFA were selected as the coating materials for the heat-resistant optical fiber. Same level of initial strength as usual nylon coated fiber was obtained for the siliconePFA fiber. Moreover the life span of the fiber was estimated as 530 years at 150 C and longer life span was measured at below 150 C.