In the latest issue of Janet News that is about to hit all good desks (and maybe a few of the rest of you too), I’ve written a little bit about some of the technologies that will be deployed at the transmission level in Janet6 – Wavelength Selective Switches, Coherent Detection, and probably the shortest description of Dual Polarisation Quadrature Phase Shift Keying that has ever been seen.  There are many other components at various layers that will make up Janet6, and I’m going to start below the ground and work my way up.