Patent ID: 8818190
Filing Date: 2014-08-26
Classification: H04B,H04J

Abstract:
1. An optical transport system, comprising a plurality of optical nodes each of which transmits/receives a wavelength-division-multiplexed signal comprising optical signals of different wavelengths via an optical fiber, the plurality of optical nodes each comprising: wherein a first optical node in the plurality of optical nodes is configured to transmit the wavelength-division-multiplexed signal to a second optical node in the plurality of optical nodes, wherein the first optical node comprises an optical control unit configured to change power levels of the wavelength-division-multiplexed signal on a wavelength-by-wavelength basis, wherein the second optical node comprises: wherein the target value calculation unit is configured to: wherein the second optical node comprises a second control signal transmission/reception unit configured to transmit a first control signal comprising the calculated control amounts to a first control signal transmission/reception unit of the first optical node, and wherein the optical control unit of the first optical node is configured to change the power levels of the wavelength-division-multiplexed signal on a wavelength-by-wavelength basis according to the control amounts included in the first control signal transmitted by the second control signal transmission/reception unit.