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Centralized and Cascaded Distribution of Fiber Optic PLC Splitter in Network

Views:29     Author:Fiberall Technology (Shenzhen) Co., Ltd     Publish Time: 2017-10-17

Fiber optic PLC splitter is a kind of integrated waveguide optical power distribution device based on quartz substrate. It has many advantages, such as insensitive to wavelength, good uniformity, high and low temperature resistance, compact size and suitable for high intensity and so on. It is an indispensable and important optical component of modern passive optical network (PON) and FTTx network. It has one or more input terminals and multiple output terminals, which are used to connect the local terminals and terminal devices in passive optical network (PON) and achieve optical signal splitting.

According to the network structure, there are two distribution ways for fiber optic PLC splitters, centralized distribution and cascade distribution. Concentrated distribution is optical splitter is concentrated fixed on a position between the optical line terminal (OLT) and optical network unit (ONT), and then transmitted to each terminal user, this way is more suitable for network application which the users are centralized. Fiber optic PLC splitter used here is usually 1:32 and 1:64. For example, a 1x32 PLC optical splitter can be used to deliver local network services to 32 home users respectively.

Centralized distribution PLC fiber splitters is usually installed in the fiber distribution hub or fiber terminal box. Among them, the fiber optic PLC splitter used in the optical fiber distribution hub is pallet type, micro type (steel tube) and ABS module type. The PLC optical splitter used in the optical terminal box is bare fiber type.

The largest difference between the cascade distribution and the concentrated distribution is that the cascade distribution has two stages of light splitting (the concentration distribution is only one stage of the light splitting). For example, if we use fiber optic plc splitter in cascade distribution to provide service to 32 home users, the fiber optical splitter is dispersed, the splitting ratio of the PLC splitter in first level is 1:4, and the splitting ratio of the PLC splitter in second level is 1:8.

The cascade distribution way is more complex than the concentrated distribution, but it can maximize the utilization of optical fiber resources, and the wiring is flexible, which is more suitable for the more dispersed network applications. Fiberall is able to provide fiber optic PLC splitter suitable for both applications.

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