Even if that solution was available, it will dig a serious hole in your pocket coupled with a lot of tech challengies.
First, Zol tech support will not help with setup or if things go wrong.
Second, lm not sure what sort of fibre tech are they running to the cpe equipment ie, your router. If its single mode long range, then you can not directly terminate it into a pc, it needs special long range gbic. I do not have zol fibre so lm guessing the setup. The fibre hav two sides, the termination side and the receiver side. Your router act as both bundled together.
In this case, l think buying an inverter is your smart cheap move.