Designed in 2018, but only now uploaded to github, a simple SFP breakout board for playing around with SFP or SFP+ transcievers.
In contrast to earlier boards, this one has no op-amps or transformers on the TX/RX lines, and bandwidth seems to be good enough for 1Gbit/s at least.
https://github.com/aewallin/SFP-Breakout-Board
