The curvature of the ceramic ferrule is too small
① If the radius of the ferrule is too large, it may be due to the grinding pad being too hard; If the radius is too small, it may be due to the grinding pad being too soft. If this area is too small, consequently we'll get smaller area of a connector, which r a costs for its maintenance. The TIA-455-218 standard (and others) recommends using a region that has an outer diameter of 250 microns and an inner diameter of 140. The three parameters measured for end face geometry are fiber height, radius of cur ture and offset.
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