抄録
Usually, two optical fiber plugs are connected by facing each endface of the plug ferrules and inserting them into the alignment sleeve. The concentricity of the fiber core with the plug ferrule is, therefore, most important to decrease misalignment at the connection, hence the loss of signal transfer in fiber optic links. The present paper aims to develop a machining system capable of turning the plug's cylindrical surface so as to become concentric with the fiber core within the tolerance of ±0.5 μm. The principle of the developed machining system is as follows. The light incident at one end of the fiber is guided and emitted from the endface of the plug ferrule to be machined. This light is amplified and detected by the position sensitive device (PSD), then the center of the light spot is calculated. The plug ferrule to be machined is mounted on the XY table and positioned so that the fiber core is concentric with the center of rotating cutter according to the output signal of the PSD. The development of each element and the overall performance of the system are described.
