Any of a number of different wireless transmitters plugged into fiber. There are laser transceivers for use in open air, but they don't work particularly well

Any of a number of different wireless transmitters plugged into fiber. There are laser transceivers for use in open air, but they don't work particularly well in rain or fog. So not great for Seattle. http://en.wikipedia.org/wiki/Free-space_optical_communication http://en.wikipedia.org/wiki/Free-space_optical_communicatio...