It consists of double-sided plastic-coated aluminum strips (PAP) or steel strips (PSP) longitudinally bonded outside the cable core. In addition to providing mechanical protection for the cable core, the sheath mainly prevents moisture or water from entering the cable core. Cables with lead alloy sheath - the first solution adopted in the development of metallic. These cables are constructed with multiple tubes filled with water blocking jelly with a fibre count up to 144 fibre strands. They form the backbone of high speed networks and give flexibility and versatility to networks. They give flexibility Versatality to networks and can be used for direct. Cable core: It is located in the center of the optical cable and is the main body of the optical cable; its function is to properly place the optical fiber so that the optical fiber can still maintain excellent transmission performance under certain external forces. This file is an extract from the Blue Book. While the presentation and layout of the text might be slightly different from the Blue Book version, the contents of the file are identical to the Blue Book version and copyright.
