The color is not enough to completely distinguish the difference between the two fiber optic cables. This is because there are many types of fiber optic cables on the market today. OM4 50/125µm (850 nm Laser-Optimized) MultimodeĪlthough this tutorial describes in detail how to distinguish different fiber optic cables by using optical fiber chromatography and the color of the jacket, sometimes we cannot distinguish the fiber optic cable simply by the color code of the fiber optic cable. OM3 50/125 µm (850 nm Laser-Optimized) Multimode Generally, different kinds and different applications of the optical cable will also have different colors of the sheath, the following table is the sheath color of common optical cables: The TIA-598C standard also makes different provisions for the color of indoor cable jackets to distinguish different applications of optical cables. The following table shows the chromatographic arrangement of fibers in a loose tube (International Fiber Optic) The order of colors of the internal fiber is as follows: For example, the fiber color codes of the 24 chain sets repeat some variations, for example, the first set of 12 is a solid color, and the second set is a solid color with stripes or other identifying marks. Each group of 12 fibers was determined by other methods. For example, the first tube is blue and the second is orange.įor cables consisting of more than 12 strands, the cable color code will appear repeatedly. Generally, 12 fibers or less are a bundle of tubes, and each tube will be numbered or colored according to the same fiber color code. There are two situations for multi-fiber cables:Įach fiber in the sleeve has its own unique fiber number, color, beam tube, etc. According to EIA/TIA-598, inner fibers are color coded in a group of 12 fibers and they are counted in a clockwise direction. They are often distinguished from one another by color-coded jackets, buffers or tubes on each fiber. Inside a multi-fiber cable, individual fibers are compliant with fiber color code as well. Therefore, this tutorial mainly discusses how to distinguish different kinds of optical fiber cables by using indoor optical cables for color coding in terms of optical fiber chromatography and the color of the cable jacket. This is because outdoor cables are generally black jacketed to protect the cable from damage caused by sunlight and ultraviolet radiation. It should be noted that the outdoor cable is not within the scope of these standards. These different colors of optical fiber cable are generally used in indoor applications, and the TIA-598C standard and EIA/TIA 568 standard specify the color coding of the indoor optical cable. The color coding of the indoor optical fiber cable distinguishes the fire resistance of different kinds of optical cables and optical cables according to the color of each optical fiber in the sleeve and the color of the optical cable sheath. Therefore, a comprehensive understanding of the color coding of indoor optical cables is one of the necessary skills for cable managers. It also has an important function, which is to help users to easily and accurately identify which types of fiber optic cables are used in fiber optic cabling systems. Color coding of indoor fiber optic cable is not just for decorating indoor fiber optic cabling systems.
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