JOINT SIGNAL-ROUTING AND POWER-CONTROL FOR AN OPTICAL NETWORK

摘要

We disclose a signal-routing method directed at improving the throughput of an optical network by taking into account the fiber nonlinearity in the process of solving a joint signal-routing and power-control problem for the optical network. Based on the obtained solution, a network controller may set the signal-routing configurations of the various network nodes and the optical gains of the various optical amplifiers to enable the optical network to carry the traffic in a manner that results in a higher throughput than that achievable with the use of conventional signal-routing and/or power-control methods.

主权项

1. An optical communication method comprising:
determining a plurality of optical paths for a traffic matrix to be routed through an optical network, wherein each optical path of the plurality satisfies a feasibility condition defined by a first threshold value and a second threshold value, the first threshold value being configured to specify an optical signal-to-noise ratio, and the second threshold value being configured to specify an optical nonlinearity threshold; determining a universal set of powers, each power in said set corresponding to a respective span in the plurality of optical paths and representing an optical power level in that respective span, with each power in said set being determined based on the first and second threshold values; and routing the traffic matrix through a subset of the plurality of optical paths.