Fiber Optic Receiver Circuit - Reverse Engineering (auch Deutsch)

(Ihr könnt auch gern auf Deutsch antworten)

Hello dear Community,

I am trying to analyze the interface circuit between a fiber optic 
receiver and a TTL signal.

I have done some work, which you can see in the attachment. Why I still 
don't understand is the role of the resistances and capacitances around 
the comparator LT1016, although I have read a lot about classical op-amp 
and comparator circuit.

I would really appreciate it, if anyone could explain what exact 
function each resistance or group of them at input and output has. The 
function of the capacitors C6 and C7 is also a mistery to me. In case 
classical strategies are used, please mention its name so that I can 
read more about it :-)

I have done also a SPICE Simulation of the circuit, taking the receiver 
as a voltage source. You can take a look at it, in case this would be 
helpful.

In case nodes and current equations need to be solved, you guys don't 
need to do it for me. You could give me (precise) indications in what 
direction to go.

Thank you very much for your nice and effective help.

Luis

More information on the circuit:

http://www.avagotech.com/docs/AV02-0723EN - Page 6