The most commonly used fiber optic medium type is the link segment. There are two fiber optic link segments in use, the original Fiber Optic Inter-Repeater Link (FOIRL) segment, and the newer 10BASE-FL segment. Fiber-to-the-home (FTTH) fiber optic cabling is generally divided into the trunk part, distribution part, the introduction part, and access part from the base station to the user, as shown in Figure 1. If the fiber link from the base station to the user passes through only one fiber cable segment. The fiber optic cable lines used in FTTH network are generally divided into backbone fiber optic cable, distribution fiber optic cable, FTTH drop cable and the access fiber optic cable to user's home, as shown in below diagram. It has 12 fiber pairs, each having a design capacity of 12 Tb/s using current technology, and a length of 16,206 kilometers. If you're unsure which cable or strand count is.
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