Optical attenuation at the port of the optical splitter in the corridor

Measure the optical power at both the input and output ports of the splitter. Actual optical attenuation = Upstream optical power on one side of the test point - Upstream optical power on the other side of the test point. In fiber optic networks, particularly in FTTx (Fiber to the x) and PON (Passive Optical Networks) deployments, splitters play a central role in distributing the optical signal from a single source to multiple destinations. [pdf]

Where is the fiber optic port when relocating a router

Identify the Fiber Port: Locate the fiber optic port on your router or modem. Some modems have the port behind a panel; consult your device manual. To connect your fiber optic cable to a router, ensure you have the following: Fiber optic modem (ONT): Most fiber connections require an Optical Network Terminal (ONT), provided by your ISP. Also, some end-users may not be happy about the aesthetics and practicalities of having a comms hub at the ONT. The fiber optic cable does not plug directly into a standard home router because the signal type must be translated. [pdf]