FR… perhaps this might help…
There are different fibre transmission types such as
SX : short wavelength multimode
LX: long wavelength single mode
Etc
LX is suited for longer distances, SX ideal for shorter lengths.
There are fibre types OM1 through OM4 … this is like fibre equivalence of twisted pair Cat Number.
There is the fibre connection types such as
LC: Lucent connector
SC: Standard connector
Plus many more
There are the link options of either duplex (send and receive fibres) or simplex (single fibre)
Finally there is the transceiver type such GBIC, SFP or SFP+
There appear an array of options, as fibre is used in a range of IT environments, and major IT manufacturers such as Cisco support many options to support many environments.
So in our application for home networks we can narrow it down a bit.
First the device connecting the fibre may only support a certain mode or connector type or specific SFP transceiver module types…
Typically we will have SFP transceivers that support duplex SX or LX fibre transmission using OM1 or OM2 fibre with often LC connectors at 1Gbps.
The key thing is what the transceiver or SFP supports, and both ends need to be the same type. There are some considerations with IT grade components on minimum lengths and maximum lengths for reliability. SX (Multi mode) is designed for shorter distances, ie typically where you could otherwise use a twisted pair cable. But LX can also be used in some shorter distance cases, but specific SFP/fibre matching or optical attenuators may be required, so generally SX would be recommended for home network use rather than LX.
As far as the network operation, the fibre transmission type and fibre type is transparent and makes no difference.
Hopefully this of some help, the key thing here is both ends of the fibre link need to use the same transceiver type. (Edit as per Chris’s comments below… same type, but not necessarily same vendor)
Oh yes the other thing, unlike TOSLINK, Ethernet fibre can be dangerous. Never look into the end of an active fibre, it may damage your sight. Network fibre needs to be treated with care.