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The end point of optical signal-optical cable terminal box

As we all know, operators of basic communication engineering equipment often have to deal with various types and sizes of optical fiber products. In addition to our common optical fiber products, basic communication optical fiber projects also require connection equipment, and terminal boxes are one of them.

The optical cable terminal box is also called the optical fiber terminal box, which is mainly used to protect the bare fiber and pigtail of the optical cable. It is the end connector of the optical cable and the pigtail at the other end. The function of the optical cable terminal box on the wall or on the cabinet rack is to provide the fusion of optical fiber and optical fiber, the fusion of optical fiber and pigtail fiber, and the transfer of optical connectors, and provide mechanical protection and environmental protection for optical fibers and their components. A box for protecting the optical cable and pigtail splicing at the terminal where the optical cable is laid. All in all, if the optical cable splice box is the “vessel” of optical signal transmission, then the optical cable terminal box is the end point where the optical signal arrives.

Optical cable terminal boxes can be divided into wall-mounted (desktop, wall-mounted), embedded, pull-out, rack-mounted, etc.

The commonly used optical cable terminal boxes are 4 cores, 8 cores, 12 cores, 24 cores, 48 cores, etc. The adapters (also called flanges and fiber optic couplers) installed on the terminal boxes generally include SC, FC, ST, and LC. . Generally, the desktop optical cable terminal box has 4 cores and 8 cores. After the welding is completed, it is hung on the wall or placed on the table or directly placed in the box; the rack type optical cable terminal box has 12 cores, 24 cores, and 48 cores. Can be mounted on a cabinet rack.

The structure inside the optical cable terminal box includes a spliced fiber tray for fiber winding, an optical cable fixing plate (for fixing the optical cable), an adapter installation port, and an optical cable steel wire fixing bolt (copper column), etc. For a terminal box with a large number of cores, the spliced fiber tray Can be stacked in multiple layers. For the optical cable terminal box that directly exits the pigtail, there is a rubber protective sleeve at the outlet of the pigtail to prevent the iron sheet from damaging the fiber pigtail.

The pigtail used in the optical cable terminal box should be determined according to the communication equipment or optical cable model, such as single-mode optical cable, multi-mode optical cable, multi-mode 10 Gigabit optical cable (OM3), etc. In short, optical fiber adapters, optical fiber pigtails, optical fiber jumpers, optical cables, The transmission media used by optical communication equipment should be consistent in order to effectively transmit and receive corresponding data signals with low loss.

The optical cable terminal box is relatively low in terms of product cost and labor cost, but in any case, the terminal box is a central product in the field of optical cable transmission, and it is an indispensable device in the process of optical fiber entry. Sex plays a big role. Outdoor optical cable protection engineers should also be familiar with the connection between various devices, so that we can improve work efficiency and promote the rapid development of communication work when we perform detailed operations.