Optical Fiber Connector Grinding and Polishing

1, The research of optical fiber connector causes optical fiber connector polishing as one of the most important optical passive devices in fiber system, the performance requirements of the lower insertion loss, return loss is higher, in order to improve the reliability of optical fiber transmission system. In order to evaluate the quality of optical fiber connector, the three important parameters, such as the radius of curvature, the offset of the vertex and the sag of the core, should be measured. Only the end shape parameters that in a certain range, to ensure the fibers to maintain good physical contact; in addition, but also to remove the metamorphic layer fiber end, and test the fiber end whether there are scratches or other damage. Finally, the performance of low insertion loss and high return loss is satisfied. Therefore, it is very important to improve the optical performance of the optical fiber connector.

2, Optical fiber connector polishing equipment (1) Seiko giken features: pressure, angle of four spring pressure, high efficiency, fixture head number 18 head /20 head /12 /6 head; (2) Seiko electronic pressure, weight center pressure; fixture head 12 head majority; pressure instability, lack of precision but the simple operation. (3) in addition to Domail machines, such as nano machines MCP-24/-32

3, Optical fiber connector polishing process optical fiber grinding process is the abrasive surface of a large number of abrasive particles on the surface of the optical fiber. The four part: grinding method to glue package - coarse grinding semi fine grinding, fine grinding, polishing (1) for outsourcing is the ceramic sleeve for optic fiber connector, fiber optic connectors such as FC type, SC type, ST type, LC type diamond polishing film series mainly used for grinding, polishing in ADS. Grinding process: SC30/15-D9-D6-D3- D1-ADS/ cerium oxide polishing film +SiO2 polishing solution; or SC30/15-D9-D3-D1-ADS/ cerium oxide polishing film +SiO2 polishing solution; or SC30/15-D9-D1-ADS/ cerium oxide polishing film +SiO2 polishing solution. The SC30/15 silicon carbide abrasive sheet for plastic package; D9 or D6 or D3 diamond abrasive sheet used for coarse grinding; D1 diamond grinding blade used for semi finishing grinding; diamond grinding blade used for grinding D0.5. ADS/ cerium oxide polishing film +SiO2 polishing solution used for polishing. Abrasive pad with rubber pad. (2) APC ceramic sleeve optical fiber connector, the need for large size diamond grinding process.

The paper is inclined, and then used to grind with D9-D1-ADS. (3) for the outsourcing of plastic sleeve optical fiber connectors, such as MT-RJ type fiber optic connector grinding process: SC30/15-SC9-SC6-SC3-SC1, with black + cerium oxide polishing solution for polishing; polishing pad using glass mat. Note: (1) in the process of polishing, grinding to finish each step with pure water and wipe clean paper will end pin body clean; (2) research water polishing process as grinding medium; (3) polishing positioning should pay attention to high, otherwise it will cause a length. When positioning the grinding disc and pin to remain vertical, otherwise it will cause the convex spherical offset bad (eccentric); (4) due to various manufacturers to pin the impact of different polishing parameters; (5) the abrasive abrasive paper than work hard, rather than slice polishing with a soft workpiece.

4, Optical fiber connector polishing surface detection (1) geometry test using interferometer test connector end parameters, including vertex offset, the core of the convex and concave, the radius of curvature of the end face, core / pin roughness. (2) the return loss and insertion loss of optical fiber connector are measured by the loss / loss tester.