[Map] Select the appropriate optical fiber connection method saves the cost of F
Of: Trevor Smith Translator: Wei on Giving
Today, the access network market Competition Very intense, when the deployment of fiber-to-floor (FTTP) network, the early cost estimates are usually very difficult to do but is essential. This is because service providers need to consider not only the initial installation fee, but also the unexpected business Operation And maintenance costs. Model of a large number of strong evidence of cost estimates: in the design and construction stage, select the connection of different section of the right way FTTP network, more precisely speaking, the network used for the life of spot welding than strengthen the connector, can bring about more significant economic benefits.
Despite the design, FTTP architecture vary, but they have basic similarities. One of which is the cost model shows that: reduce the welding points, welding technician, and welding the number of operators will significantly reduce overall network costs. In addition, the new regime introduced multi-fiber service terminal (MST) and the concentration method of welding points, further reducing initial construction costs (see Figure). Finally, when the technicians in the maintenance, repair faults and opening of business, the FTTP network, two basic areas?? Feeder section and the interface between the distribution of equipment, distribution equipment and outdoor equipment for households Cable The interface between?? Use connectors, will make access easier and lower cost.
Early FTTP network set up to weld from the central office staff to the user network, each junction. The reason is the outdoor environment, cost and reliability of the connector lack of confidence. For example, when the outdoor temperature close to -40 ° F when the plastic connector used in optical fiber and more than shrink, which leads to fiber-optic micro-bend, which led to insertion loss.
Recent years, connectors and cable accessories greatly improved reliability. Studies show that the new cable and accessories is available in most harsh environments. Components using low-shrinkage plastic Make The remaining space filled Adhesives . Today, the components are factory designed to compensate for temperature changes to meet the Telcordia GR-326 Issue 3 standards.
Specially designed for outdoor equipment, the latest accessory connector and cable ready, the network set up can now use the connectors, they can connect any device placed in the network connection point, without further welding the.
Typical business transfer FTTX Figure shows a typical FTTX networks in the key position of use multi-fiber service terminal can reduce the number of welding points, which will reduce worker weld together the work of the time and cost.
Welding and connectors In the network, which places the connector in the most meaningful? To simplify troubleshooting, easy to reconfigure and opened business in the central office, the use of connectors is already the standard practice was. In today's FTTP network, which is still applicable?? In the outdoor equipment used to connect the key crossing point allows the network has good flexibility. And the use of welding is more than cost savings.
FTTP optical distribution network of a typical network element Package Including the fiber distribution terminal (FDT) of the feeder cables, splitters are located in FDT. Distribution cable connected to multiple fiber from the FDT business end, households are cable connections come here. Then-home cable connection to each user from the MST building optical network terminal (ONT).
In this part of the network, many positions need to connect optical fiber. In many optical connections, such as the feeder and distribution cables, optical fiber can simply weld together. However, in the FDT, MST, and the key junction ONT optical connector can get better use of the flexibility.
In the network use any connector junction better at these points, in order to test, launch operations and re-configure the business, technical, requiring constant access to the network. Compared with welding, use of connectors in these locations can reduce operating costs and save time. To test the access network would need to first consider alternative welding connector.
FTTP network fault isolation to bring the two key technical challenges. First of all, once the OTDR trace signals encountered in the beam splitter FDT, it is difficult from the CO returned. Therefore, technicians must FDT Department access network. If the connection point for all FDT have fusion, you need to work to open the weld fusion line. Tracking is completed, splitter must be re-weld to the distribution fiber. This process is very time-consuming and costly, but also in the process of optical fiber operation caused more problems there are risks.
In the splitter's output ports to use the connector to facilitate the distribution of all cable testing. We just need to find out the distribution of fiber may be a problem, disconnect the corresponding splitter output pigtails, and then plug the OTDR Launch Cable. Upon completion of testing, OTDR launch cable disconnected from the distribution of fiber ports, and re-connect splitter output pigtail. To do so without damage to fiber, without welding. And, since all splitter outputs are connected to the plug wire fiber board, like adding a layer of clothes, makes optical fiber in the normal processing will not be damaged.
In addition, FDT fast isolation of network faults on a point of great influence. As the user location or timing of a number of reasons, the ONT from the user point of testing is not easy to achieve. But If we as a wiring splitter box, many users can test optical fiber. Also, in each splitter output port to use instead of welding the connector to simplify the testing process and reduce costs.
Further reduce welding costs Use the connector in the MST can significantly reduce costs, reduce the number of welding technicians. This is a relatively new type of architecture: the MST pre-terminated with 12 fibers, each fiber extending from a central point of fusion to each MST. This architecture avoids the heavy use of fiber optic cable, but also to prevent access from many locations these cables.
Although the number of welding points, roughly the same, but all in one place for welding, which further reduces the FTTP network total cost of welding. As the cost of welding during most of the settings produced welding in a central location where skilled workers can make a complete set and welding up to 12 fibers.
In addition, MST in no welding, this could make connecting fiber optic terminal box and storage box for a small sub-lines. From the perspective of materials and installation, this is an advantage. Since most of the municipal councils are
I am an expert from China Computer Parts, usually analyzes all kind of industries situation, such as amber white oil , cookie jars wholesale.
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