Electrical – SFP breakout to another SFP

pcbpcb-assemblypcb-designsocket

Hey all I am just wondering before I do this if its possible to connect 2 SFP sockets to each other in order to bring in the fiber connection and then take it back out the same way?
enter image description here
So in the image above, Pin 1 would hook up to Pin 1 on the second SFP socket. Pin 2 would hook up to Pin 2 on the second SFP socket, etc etc…

I'm doing this so that I can bring in the SFP connection into a server case and then once inside the server case I need to hook it up to a motherboard inside there that has the SFP connection.

To better illustrate what I am trying to accomplish:
enter image description here

this is what the ONT fiber hook up looks like that I am wanting to use (green connector).
enter image description here

Best Answer

I would expect that this isn't possible due to the I2C configuration interface and other system status/control signals defined on the connector. You would also need the appropriate power supplies on the board for the modules, so it couldn't be a passive adapter or passthrough board. To coordinate the TX/RX high-speed differential pairs, you would also need to swap pins and likely include DC blocking capacitors on those lines.

What pre-SFP interface are you planning on using? If you are using a consistent optical interface, you could look into short fiber jumpers that have a socket for exposing to the user and use just one (rather than three) SFP on the internal board.