Measuring end-face 3D parameters such as ferrule X/Y-angle (Sx/Sy), fiber height (H), minus coplanarity (CF), ferrule surface X/Y-radius (Rx/Ry), fiber tip spherical radius (RF), and core dip (CD) provides both quality control and quality assurance, especially in. Measuring end-face 3D parameters such as ferrule X/Y-angle (Sx/Sy), fiber height (H), minus coplanarity (CF), ferrule surface X/Y-radius (Rx/Ry), fiber tip spherical radius (RF), and core dip (CD) provides both quality control and quality assurance, especially in. The end face geometry of multi-fiber (MPO) connectors is a key factor in controlling connector performance, directly affecting insertion loss (IL) and return loss (RL). A non-contact technique called scanning white-light interferometry (SWLI) provides high accuracy, repeatability, and reliability for fiber connector testing, particularly for. Standards such as IEC 61300-3-47, Basic test and measurement procedures for end face geometry of PC/APC spherically polished ferrules using interferometry, and a series of IEC 61755 standards covering angle polishing, ferrule geometry, materials, and other connector parts, provide precise. ③ CoreDip may be caused by prolonged polishing time, which can be reduced appropriately. Conversely, the polishing time can be extended appropriately. According to IEC standards, three parameters are generally specified for PC type connectors:radius, apex offset, and fiber height. ①Radius of. This paper studies the end face geometry and visual quality of a multi-fiber VSFF connector, the MMC connector with TMT ferrule, using traditional parameters defined in IEC standards.