TWDM Passive Network with Extended Reach and Capacity

A method comprising:

• receiving, at a first multiplexer, and multiplexing/demultiplexing between:
• a first multiplexed signal;
• and
• a first optical line terminal signal having a first multiplexing group and a second optical line terminal signal having a second multiplexing group;
• receiving, at a second multiplexer, and multiplexing/demultiplexing between:
• a second multiplexed signal;
• and
• a third optical line terminal signal having the first multiplexing group and a fourth optical line terminal signal having the second multiplexing group;
• and
• receiving, at a third multiplexer optically connected with the first multiplexer and the second multiplexer, and multiplexing/demultiplexing between:
• a feeder optical signal;
• and
• the first and second multiplexed signals,
• wherein each of the first and second optical line terminal signals comprises a corresponding downstream wavelength in a downstream free spectral range, and each of the third and fourth optical line terminal signals comprises a corresponding upstream wavelength in a upstream free spectral range, and
• wherein the first multiplexing group comprises a time-division-multiplexing passive optical network protocol and the second multiplexing group comprises a wavelength-division-multiplexing passive optical network protocol, each wavelength being a point-to-point link.