--- Quote Start ---
Then it's possible to achieve the I/O speeds specified in the 'High-Speed I/O Specifications for Cyclone V Devices' section of the datasheet.
What IP? This depends on what you want to do - you don't necessarily need any.
Altera offer a
'serial gigabit media independent interface (
https://www.altera.com/solutions/technology/transceiver/protocols/pro-sgmii.html)', but you might struggle to get that working given how you've connected up your SFP.
Cheers,
Alex
--- Quote End ---
I tried to implement SFP without IP.
But i am struck up with output.