This article delves into the three-parameter standards for fiber optic patch cord endfaces (Radius of Curvature ROC, Apex Offset, and Fiber Height), helping you understand how these parameters ensure physical contact, achieving low insertion loss and high return loss. One or both ends of the patch cord are equipped with standardized fiber optic connectors, and common interfaces include LC, SC, FC, ST, etc., which can be. ☆ Using extra high precision ceramic ferrule with small concentricity error and core diameter, better insertion loss and return loss can be achieved for optimized transmission performance. ☆ All fiber surface parameters such as the apex offset, fiber height and radius of curvature comply to IEC. When interpreting APC geometry results in order to modify the polishing process to improve results, it is important to understand Apex Offset - namely, that Apex Offset (for both PC and APC ferrules) is really the result of two components: Angle and Key Error. In the case of PC ferrules, Apex. Measuring the apex offset (offset of the polish from the fiber) requires defining the “high point” or vertex of the polish. Since the fiber itself could be recessed or protruded, the sphericity of the ferrule surface (as defined by the Fitting Area) is used to calculate the vertex.
