报道了一种高精度测量光纤连接器端面几何参量的自动测量仪。叙述了光纤连接器的端面几何参量的测量原理。由光纤连接器端面形貌和纤芯中心坐标，可以高精度得到曲率半径、顶点偏移量、端面倾斜角和光纤高度等影响连接器性能的关键端面几何参量。该仪器体积小，自动化程度高，用户界面友好，使用方便，可测量物理接触、角度式物理接触等类型的光纤连接器端面几何参量。实际测量证明，该测量仪有很好的重复测量精度。该测量仪与美国Dorc公司ZX-1 mini PMS测量仪和Norland公司NC3000测量仪相比，测量精度水平相当。该仪器样机已通过华东国家计量测试中心的测试。

An interferometer for measuring endface geometry parameters of optical fiber connector with high accuracy is reported. The endface topography of the optical fiber connector and the coordinates of the center of the fiber core are obtained. The endface geometry parameters, which have a great effect on the performance of optical fiber connector, are calculated. The interferometer is compact and easy to use. It can be used to measure the endface geometry parameters of physical contact, angle physical contact and other kinds of optical fiber connector. Actual measurements show that the interferometer has a good repeatability. The measurement accuracy of the interferometer is at the same level as that of the Dorc's ZX-1 mini PMS interferometer and the Norland's NC3000 interferometer. The interferometer has passed the test performed by the National Center of Measurement and Test for East China.