Method and Apparatus for Testing Concentricity of Optical Fiber in Connector and for Testing Loss in Fiber Cable
Original Publication Date: 1987-Oct-01
Included in the Prior Art Database: 2005-Feb-02
Two X-Y positioner stages each have means to receive one fiber-optic connector of a cable that is to be tested and another connector of a cable that is a permanent part of the test apparatus. One of the permanent cables is connected to a light source, and the other one is connected to a light receiver. During a test, light from the source is transmitted to the receiver along a path that includes the test cable and its two connectors and the two permanent cables and the two permanent connectors. During a test, the value of light measured at the receiver is subtracted from the value measured during a calibration test that is made without a test cable.