In this case use an optical power meter (OPM) and test the input port of the splitter for the optical power level (dBm) from the OLT at 1490 nm. If the power level is reduced it could be as simple as. Optical splitters in the outside plant (OSP) are used mostly in passive optical networks (PONs) for fiber-to-the-user (FTTx) networks, and are often overlooked as failure points. If done incorrectly, it may lead to signal degradation, connectivity issues, or even equipment damage. In this guide, we'll explain how to safely connect a splitter to another splitter, covering both fiber. When connecting two switches using the optical transceiver, please ensure that they are of the same type, with the same wavelength and data rate, then recheck the connection between them. Directional 2 × 2 couplers (see Figure 1) are usually used for such purposes. The optical network system uses an optical signal coupled to the branch distribution.
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