Fiber Optic Splice Closure It is one of our products. Let me introduce the laying of optical fiber access network for the development of optical fiber communication.

　　Optical Distribution Network (ODN) at the access layer

　　The FTTx system generally consists of three parts: OLT (optical line terminal, generally located in the CO room), ODN (optical distribution network), and ONU (optical subscriber unit).

　　In the development, the access layer needs to build a huge optical fiber distribution network, which is the OONoptica Dtoton w) network. whole ON

　　The Beiji line starts from the origin of the business sink (the first-most C computer room), passes through the trunk, leads, and enters multiple optical cable segments, and finally reaches the user.

　　trunk segment

　　The trunk segment refers to the segment from the service convergence point to the trunk optical cable junction box (hereinafter referred to as the "trunk optical junction") and its intermediate optical cable segment. The switch is the interface device of the optical cable, which can connect, distribute and dispatch the optical fiber core of the optical cable entering the box. The networking structure of the dry optical cable line can be a ring or a tree. Whether it is a ring or a tree, some (or all) fiber cores in each trunk can directly reach the service convergence point (end). Therefore, the trunk optical crossover is also called the grade light crossover. (The networking structure of the backbone optical cable line is shown in the figure below)

　　wiring segment

　　A distribution segment refers to the cable segment from the trunk optical crossover to the distribution optical crossover, and in between. The network structure of the distribution optical cable line can be tree, chain and ring. Wiring Optical Cross One

　　Generally, it serves such as residential areas, commercial buildings, etc., so the wiring optical interconnection is also called residential optical interconnection and building access optical interconnection. The fiber core at the optical switch end of the distribution can only reach the trunk optical switch.

　　If you want to connect to the service convergence point, you must go through the backbone optical crossover fiber, so the wiring optical crossover is also called the secondary optical crossover.

　　Introductory segment

　　The lead-in section refers to the section of the optical cable from the optical distribution to the fiber distribution box and between the fiber distribution boxes. The network structure of the optical cable line is mainly tree and chain.

　　entry section

　　The home segment refers to the optical cable from the optical fiber distribution box to the user terminal.

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