MPO · Multi-fiber Push-On
The multi-fiber connector terminating parallel-lane optics; its base-N grouping and polarity scheme decide whether the fiber plant survives the next lane-rate generation or has to be re-pulled.
Current numbers
~98%reduction in physical cable count from high-density pre-terminated MPO trunking vs discrete jumpers at cluster scale
16 fibersper 800G-DR8 / 1.6T link via MPO-16; OS2 single-mode trunked once rides 800G → 1.6T → 3.2T on transceiver swaps alone