Fiber optics module: built in or plug-in module?
You could have a look at the SFP or SFP+ standard (SFF-8431). It might be grossly overpowered for your application but the physical interfaces might give some interesting hints. SFP uses an opto-to-electrical module (with a small PCB inside) which is plugged into a PCB mounted cache witch has a female cardedge connector inside. The interconnect can also be made purely electrical without fibre.

http://en.wikipedia.org/wiki/Small_form-factor_pluggable_transceiver

For some connector hints check out some of the connector manufacturers. Samtec has a couple of card edge connectors that are OK. Go "Signal Integrity"->"High speed IO" in the link below.
http://www.samtec.com/picturesearch/