> Any free space optical approach you can imagine will be slower and noisier than the equivalent technology in a fiber. Granted. More path loss, dispersion, p

> Any free space optical approach you can imagine will be slower and noisier than the equivalent technology in a fiber. Granted. More path loss, dispersion, potential for interference. The question is how well can you do? > This is not real. I believe ETHZ; of course there's more to do to make a practical system.