Yes, you can connect two routers to one fiber modem, but understanding the 'how' and 'why' is crucial for optimal network performance. Are all the strands in the optic fiber cable gonna work at the same time and are they compatible with the transceivers? Thank you yes, for single-mode modules, you'll need single mode fiber/cable. Check the specs, that the advertised wavelengths and desired distance/length match. Assuming you don't. Assume you have house with direct access to an optic fibre cable (FTTP). In the basement, there is the ONT+residental gateway device that converts the light impulses to Ethernet. On each floor each. Bridging two routers on one network isn't as common as it used to be (thanks to mesh Wi-Fi systems), but it can still be an effective way to improve network access in larger spaces.
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