Optical network system architecture

A method comprising:

• initiating, by a processor, a passive optical network (PON) between an optical network unit (ONU) and an optical line terminal (OLT), wherein:
• the OLT includes a plurality of optical devices configured to exchange signals with the ONU at a plurality of wavelengths and via a plurality of pathways,
• the plurality of pathways includes a first pathway and a second pathway that differ,
• a first optical device, of the plurality of optical devices, exchanges a first one of the signals with the ONU, and a second optical device, of the plurality of optical devices, exchanges a second one of the signals with the ONU,
• the first signal is at a first wavelength of the plurality of wavelengths, and the second signal is at a second wavelength of the plurality of wavelengths that differs from the first wavelength,
• the first optical device includes a first optical input/output (1/O) that, when active, exchanges the first signal via the first pathway and a second optical I/O that, when active, exchanges the first signal via the second pathway,
• the second optical device includes a third optical I/O that, when active, exchanges the second signal via the first pathway, and a fourth optical I/O that, when active, exchanges the second signal via the second pathway, and
• initiating the PON includes activates the first optical I/O and the third optical I/O to initiate the PON via the first pathway;
• monitoring, by the processor, the first pathway;
• and
• performing, by the processor and based on monitoring the first pathway, maintenance related to the first pathway, wherein performing the maintenance includes:
• deactivating the first optical I/O and the third optical I/O during the maintenance, and
• activating the second optical I/O and fourth optical I/O based on deactivating the first optical I/O and the second optical I/O to cause the first signal and the second signal to be exchanged via the second pathway.

A non-transitory computer-readable medium to store instructions, the instructions including:

• one or more instructions that, when executed by a processor, cause the processor to:
• initiate an exchange of signals at plurality of wavelengths between a plurality of optical devices associated with an optical line terminal (OLT) and an optical network unit (ONU),
• wherein a first optical device, of the plurality of optical devices, exchanges signals with the ONU at a first wavelength of the plurality of wavelengths, and a second optical device, of the plurality of optical devices, exchanges signals with the ONU at a second wavelength, of the plurality of wavelengths, that differs from the first wavelength,
• wherein the first optical device includes a first optical input/output (I/O) that, when active, exchanges the first signal via a first pathway of a plurality of pathways between the OLT and the ONU and a second optical I/O that, when active, exchanges the first signal via a second pathway of the plurality of pathways,
• wherein the second optical device includes a third optical I/O that, when active, exchanges the second signal via the first pathway, and a fourth optical I/O that, when active, exchanges the second signal via the second pathway, and
• wherein initiating the exchange of signals at the plurality of wavelengths includes activating the first optical I/O and the third optical I/O to cause the first signal and the second signal to be exchanged via the first pathway;
• initiate maintenance related to the first pathway;
• deactivate the first optical I/O and the third optical I/O based on initiating the maintenance, and
• activate the second optical I/O and the fourth optical I/O based on the deactivating the first optical I/O and the third optical I/O to cause, during the maintenance, the ONU and the OLT to exchange the first signal and the second signal via the second pathway.