Intel has said copper cables are adequate for data transfers over short distances of up to six meters. Optical cables will be good for data transfers over longer distances of tens of meters.Source: MacWorld
The upside to optical is that it allows for longer cable runs, and as the technology develops, more bandwidth, Salvator said in email. But when connected via optical cables, devices that need power also require their own power supply. Running power over longer optical cable runs may not be practical due to impedance-induced power drop.
Copper has the advantage of providing up to 10 watts of power, which saves a device from requiring a power outlet, Salvator said.
Intel: Thunderbolt to go optical later this year
Posted on Tuesday, March 13 2012 @ 19:01 CET by Thomas De Maesschalck