If the plug is not seated correctly, the light signal may not reach the receiving device, even if the cable looks like it is plugged in. 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. These are known as passive optical splitters, and they perform the function. An optical audio cable can stop working for several simple reasons, from a slightly loose TOSLINK connection to the wrong audio output setting on your TV, soundbar, receiver, or game console. Because optical cables carry digital audio as light, even a small issue with alignment, port selection, or. Common signs that your optical cable may not be working include: No Signal: If your devices aren't communicating, you may see error messages, especially on TVs or receivers. Intermittent. Both/either of my headsets work normally when individually plugged into the optical port on the TV set. The problem seems to be in the splitter.
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