How to Add a POE on a Fiber incoming line

I hear lots of posts talking about putting a "POE" MoCA filter where the cable comes into the house in order to prevent MoCA internet traffic from flowing back into your neighbors' cable network. Instructions usually say to put it right on the cable as it comes into your equipment from the street.

So how does one do this when the signal comes in over optical Fiber to an ONT? VZ put an optical adapter and the signal runs into my cable modem on a thin yellow wire. Can I assume I can put it inline right where the coax cable comes out of the ONT/cable modem?