A method of testing a length section of optical fiber in order to determine whether the angle between an end face of the length section and a plane perpendicular to a longitudinal axis of the length section of optical fiber is within a predetermined range, comprises positioning the length section of...http://www.google.se/patents/US5140167?utm_source=gb-gplus-sharePatent US5140167 - Method and apparatus for determining cleave end angle of an optical fiber
