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FTTx-ODN Solution
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Access technologies are evolving at a fast speed, pushed forward by competition, technology development and service demands. The Optical Era is coming.
The FTTH system comprises of the optical line terminal (OLT) on the CO, the optical network terminal (ONT) on the user side, and the optical distribution network (ODN). The FTTH construction features the PON technology, which provides point to point and point to multipoint applications. ODN provides the physical channel from OLT and ONT to communicate with each other. Generally, ODN consists of the optical fiber/cable, optical connector, optical splitter, and the related devices for installing and connecting the above-mentioned components. Figure 1 is a basic ODN structure map, which is composed of 5 parts: Feeder Optical Cable, Distribution Point, Distribution Optical Cable, Access Point and Drop Cable. Section from the ODF in the CO (central office) to the optical fiber distribution point, as the trunk cable to cover the long distance; Cable section from optical distribution point to subscriber access point to distribute optical fibers for subscribers along the cable route; Drop cable section from subscriber access point to terminal to lead the cable into the home.
ODN is the main part of the FTTx network construction. So the ODN construction directly affects the total cost, system performance, reliability and the upgrade potential.
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