China Unicom optical cable wire sequence color

China Unicom optical fiber cables follow the TIA-598-C standard, using a 12-color sequence for individual fibers, repeated with stripe markers for higher fiber counts.Standard 12-Color SequenceFor single tubes or the first 12 fibers in a cable, the TIA-598-C color sequence is: Blue, Orange, Green, Brown, Slate (Gray), White, Red, Black, Yellow, Violet, Rose (Pink), Aqua . Each fiber is assigned a unique color to simplify identification during splicing, termination, and testing.High-Fiber Count CablesFor cables with more than 12 fibers (e.g., 24, 48, 72, 96, 144 fibers):Fibers are grouped into 12-fiber sets. Each set follows the standard 12-color sequence.Stripe markers or binder colors are added to distinguish repeated sequences. For example, fiber #13 in a 24-fiber cable would be Blue with a black stripe .In multi-tube cables, each tube has a color (e.g., Blue, Orange, Green) and fibers inside follow the 12-color sequence. For instance, fiber #34 in a 48-fiber cable could be the Violet fiber in the Green tube .Connector and Jacket Color CodingSingle-mode fibers (OS2): Yellow jacket, blue connector (UPC) or green connector (APC) for angled polish .Multimode fibers (OM3/OM4): Aqua jacket and connector. Older multimode may use orange or beige jackets .Outdoor cables: Typically black jackets for UV resistance; fiber identification relies on printed legends .Special NotesFor 16-fiber MPO connectors, fibers 13-16 may use Olive, Magenta, Tan, Lime colors, following European or high-density ribbon standards .Using the standardized color sequence reduces errors, speeds installation, and ensures compatibility across different manufacturers and network operators .By following this color coding, technicians working on China Unicom optical networks can reliably identify fibers, manage splices, and maintain network integrity.