It wouldn't be practical (or perhaps even possible) to build an optical equivalent of NAVSPASUR. Instead, individual sensors would detect as many objects as possible that pass through their field of view in a given timeframe. That's what Haystack Aux did. It was a mechanical dish antenna so it couldn't erect an RF fence like a phased array or even NAVSPASUR. Instead, it projected its main beam into space and counted the reflections for the sample. It was supposedly good for objects in the 1 cm range.

I remember reading a few years ago about the idea of using LASERs to deorbit debris. I like the idea and would like to see it tested. If it works, it could go a long way to reducing the debris count. This sounds like a job for Phillips Labs in New Mexico. They already have a lot of optical sensor and LASER experience.

Of course, in the long run all countries need to do a better job of reducing making more space junk in the first place. Some steps have already been taken like having catchers for debris from explosive bolts and venting residual propellants from upper stages so they won't blow up.