On Sunday October 26 2014 13:26, you wrote to Björn Felten:
BF>> Unlike e.g. ADSL, where the send channels are located in the BF>> frequency channels above the receive channels, and therefore are BF>> more sensitive to cable disturbances, there's absolutely no BF>> technical reason to have lower send speed on fibre.
TK> If the connection is made by only just one singlemode fiber, the TK> downstream will use different wavelenght of light than the upstream. TK> And the wavelenght does matter how the light goes in the fiber...
True, but 100Mbps is WAY below the capacity of a single fiber. Upstream and downstream, so 100 Mbps up would be no problem at all.... Unless...
... You do not have your own fiber all the way to exchange or whatever they call it these days. Some providers use a single fiber for more than one customer and they deploy passive splitters in the street. Then it becomes another story...
TK> If there is a pair of fibers, the situation is different.
