Patent ID: 9130691
Filing Date: 2015-09-08
Classification: H04J,H04Q

Abstract:
1. A first optical node, comprising: a first optical coupler, connected to an input optical fiber of an optical network, and configured to split input optical signals, comprising multiple optical wavelengths and associated with incoming packets, into duplicate first and second optical signals, wherein the optical network comprises multiple optical nodes, including the first optical node and a plurality of other optical nodes; a wavelength splitter configured to split the first optical signals comprising the multiple optical wavelengths into separate outputs, with each of the separate outputs having a different wavelength of the multiple optical wavelengths; a detector configured to: a second optical coupler, coupled in series with the first coupler, and configured to split the duplicate second optical signals from the first coupler into duplicate third and fourth optical signals and to pass the third optical signals to an output optical fiber connected to the first optical node; an optical receiver; and a processing unit configured to: