Patent ID: 9729229
Date: 2017-08-08
CPC Classifications: H04B,H04J,H04L

Claim:
1. A transmission system comprising: a transmitter transmitting light over a plurality of spatial-division multiplexed channels; and a receiver receiving signals from said plurality of spatial-division multiplexed channels, wherein said receiver comprises: a first circuit processing a first signal received from a source channel, wherein said source channel is one of said plurality of spatial-division multiplexed channels, wherein said first circuit comprises: a second circuit processing a second signal received from a destination channel, wherein said destination channel is one of said plurality of spatial-division multiplexed channels, wherein said source channel and said destination channel are distinct from each other, and wherein the second circuit generates a monitor signal representative of a quality of said second signal; a third circuit providing said information, extracted from said first signal, from said first circuit, to said second circuit, via a data lane, at a clock rate lower than a symbol rate of said second signal, wherein said data lane comprises a digital buffer driven at a same clock rate as said clock rate of said data lane; and a controller controlling a skew between said first signal and said second signal, wherein the controller sets a bandwidth of said digital filter, by using a value of said monitor signal and a value of said digital buffer.