Like I said before,using optical laser diodes is not a good idea as they cannot be modulated very fast,and at the reciever you need to pay close attention to the front end bandwidth,thinking more about DC restoration.Most recievers of this type use transconductance type op-amps to allow high bandwidth and high gain.
If you email me I will send you a schematic for a wideband laser diode reciever which uses an op-297
Cue the abuse from Rob Markham