Fiber Optics Cable Assemblies

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Many years in development and refinement, the advanced Molex termination process delivers exceptional performance for fiber optic terminations and cable assemblies. This process was developed to specifically control one of the most critical elements of fiber optic terminations - the ferrule endface geometry. Physical contact, fiber core alignment and termination reliability are greatly impacted by the radius, apex offset and concentricity of the ferrule. That is why pre-polished and pre-radiused ferrules are always used in Molex connectors.
High precision interferometric measuring equipment is used to control the radius, apex offset and concentricity of the ferrule, before it is assembled into the connector. In doing so, a quality ferrule endface is assured before the expense of a connector and termination labor is added to the assembly. Subsequent termination operations polish the fiber to conform to the radius of the ferrule, thereby eliminating the variability of the polishing process which could alter the ferrule geometry.

Polishing only the fiber, not the epoxy and not the ceramic, ensures the precise control of the finish and protrusion of the fiber. A high powered interferometer is used to control the length of the fiber projecting above the ferrule surface thereby ensuring physical contact without compromising long-term reliability. Terminations are visually inspected and tested for insertion and return loss. A serial number, fixed to the assemblies, provides traceability to factory measurements.

Assemblies suitable for data communication, telecommunication and CATV applications are terminated with connectors that are designed to and are compatible with industry standards (EIA/TIA, IEC, ANSI, NTT and Telcordia).

Whatever application you have in mind, the Molex production team will make certain your assemblies, whether standard or custom, are delivered on time and to your exact specifications.


  • Standard or custom assemblies
  • Precision ferrule endface geometry
  • Controlled fiber protrusion
  • Factory polished, tested and serialized


  • Telecommunication networks
  • CATV networks
  • Data communication networks