Color sequence of 24-core optical fiber cable

A 24-core optical fiber cable uses the standard 12-color sequence repeated for fibers 13–24, often with a stripe or marking to differentiate the second set. Standard 12-Color SequenceUnder the TIA-598-C/D standard, the first 12 fibers in any multi-fiber cable are color-coded as follows: BlueOrangeGreenBrownSlate (Gray)WhiteRedBlackYellowVioletRoseAquaApplying the Sequence to 24 FibersFor a 24-core cable, the sequence repeats for fibers 13–24, but each fiber in the second set is typically marked with a black stripe or ring to distinguish it from the first 12 fibers. The resulting 24-fiber color mapping is: Fiber #Color1Blue2Orange3Green4Brown5Slate (Gray)6White7Red8Black9Yellow10Violet11Rose12Aqua13Blue with black stripe14Orange with black stripe15Green with black stripe16Brown with black stripe17Slate (Gray) with black stripe18White with black stripe19Red with black stripe20Black with yellow stripe21Yellow with black stripe22Violet with black stripe23Rose with black stripe24Aqua with black stripeNotes on IdentificationStripe or ring markings are used to maintain unique identification for fibers beyond the first 12, ensuring technicians can quickly identify each fiber during splicing or termination.

Buffer tubes in loose-tube cables may also follow the same 12-color coding for tube identification, with the fiber inside following the same sequence. This system ensures global consistency, allowing technicians to interpret fiber positions accurately regardless of manufacturer or region. Using this chart, technicians can reliably identify and manage all 24 fibers in a single cable, reducing errors during installation and maintenance.