From Cable Preparation to Finished Assembly
DIMI's fiber optic cable assembly process covers cable preparation, fiber termination, curing, polishing, inspection, optical testing, and final inspection. Each step is checked before the assembly moves to the next stage.
The cable is cut and stripped to prepare the fiber for termination. The process includes jacket removal, fiber exposure, strength-member preparation, fiber stripping, and fiber cleaving. Cable length, stripping dimensions, and fiber condition are checked during preparation.
The prepared fiber is inserted into the connector ferrule and secured. Depending on the connector, the process may include adhesive application, fiber insertion, crimping, connector assembly, boot installation, and strain relief. Epoxy-terminated connectors are cured before polishing.
Connector Polishing
After curing, connector end faces are polished to PC, UPC, or APC specifications. The polished end faces are then inspected before optical testing.
Connector end faces are checked for contamination, scratches, chips, and other visible defects. Where required, interferometric inspection checks fiber height, apex offset, radius of curvature, and other end-face geometry.
Optical performance is checked after connector processing and end-face inspection. Testing includes Insertion Loss (IL), Return Loss (RL), continuity, and OTDR. For MPO/MTP and other multi-fiber assemblies, testing also checks fiber mapping, polarity, connector gender, and key orientation.
Where required, assemblies undergo mechanical and environmental testing during qualification or production inspection. Tests include tensile strength, connector retention, vibration, shock, salt spray, environmental chamber testing, and IP65/IP67 ingress testing.
Before packaging, the finished assembly is checked against the approved specification. Inspection covers connector configuration, fiber type, cable length, polarity, connector condition, labeling, appearance, and test results. Production and inspection records are retained for applicable orders.