OPTICAL NETWORK SYSTEM ARCHITECTURE

摘要

Optical devices in optical network exchange signals at a plurality of wavelengths via a plurality of pathways. Each of the optical devices is associated with a corresponding wavelength and includes multiple optical inputs/outputs (I/Os) to exchange signals at the corresponding wavelength via the plurality of pathways. During maintenance or failure of one of the optical I/Os in an optical device associated with a wavelength, communications are maintained in the optical network by switching communications at a same wavelength to another a different pathway and/or reforming the optical network using other wavelengths. For example, an optical network unit (ONU) may identify an error in a first wavelength associated with a first optical device included in an optical line terminal (OLT) and may forward data using a second wavelength associated with the other optical device included in the OLT.

主权项

1. A system comprising:
a plurality of optical devices included in one or more optical line terminals (OLTs) and configured to exchange signals with an optical network unit (ONU) at a plurality of wavelengths and via a plurality of pathways,
wherein a first optical device, of the plurality of optical devices, includes a plurality of optical inputs/outputs (I/Os) to exchange signals at a first wavelength of the plurality of wavelengths, andwherein a second optical device, of the plurality of optical devices, exchanges signals at a second wavelength of the plurality of wavelengths, the second wavelength being different from the first wavelength; and a controller configured to control the exchanging of the signals by the plurality of optical devices at the plurality of wavelengths, wherein the controller, when controlling the exchanging of the signals at the plurality of wavelengths, is further configured to:
perform maintenance related to the first optical device, wherein at least one of the plurality of optical I/Os is deactivated during the maintenance related to the first wavelength, andcause the second optical device and the ONU to exchange signals at the second wavelength during the maintenance related to the first wavelength, wherein a passive optical network (PON) between the ONU and the one or more OLTs is maintained during the maintenance using the signals at the second wavelength.