METHOD OF EVALUATION OF OPTICAL FIBERS DURING MANUFACTURING THEREOF

摘要

A method of evaluation of an optical fiber (103) during manufacturing thereof, said method comprising: - subjecting (410) a predetermined initial length of the optical fiber to a predetermined first tensile stress while the optical fiber is being drawn from a fiber preform (101); - detecting (415) a number of fiber breakages occurring in said initial length of optical fiber; - if the detected number of fiber breakages exceeds a predetermined first threshold, stopping the fiber drawing process (430); - otherwise removing the first tensile stress from the optical fiber and continuing the drawing process until completion (420,425).