I am now trying to design a photonic integrated circuit which will be used to replace the global interconnect layer of a LSI. I need to somehow take the output of a photodiode w/o TIA (10G signal perhaps) and then transmit that signal to other layer of the LSI by TSV or something. Assume a connection between photodiode and a CMOS inverter. (1) What is the required voltage output of the photodiode. I have heard from someone that the required voltage swing for driving an inverter in 32 nm node is 200 mV, is that true? I thought it would be higher. (2)Is it necessary to realize impedance matching in this kind of design?