I'm after the fastest possible pulses to drive an electro-optic modulator, with a goal of making light pulses in the 10-100 ps range.
We are using the SERDES blocks of an Altera part to make fast LVDS edges, but the edges are quantized to the SERDES PLL clock, currently 1 GHz. The fastest stuff that I've seen coming out of an FPGA is around 60 ps rise/fall, low level LVDS. Delay temperature coefficients are terrible in FPGAs, so even if you can make fast edges, they drift all over the place.
This is interesting, if expensive.
auch interessant:
schönes Wochenende, Gerhard