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Fibers

Multimode MM

Core diameter 50 or 62,5 micron. Lower cost of LED sources and lasers operation at 850nm and 1300nm.

  • OM1 62.5/125um (up to 622Mbit)
  • OM2 50/125 um (up to 622Mbit)
  • OM3 50/125 um (850nm laser optimized up to 10Gbit/s)
  • OM4 50/125 um (850nm laser optimized up to 10Gbit/s)

Single Mode SM

Wavelength 1310 or 1550 nm.

  • OS1 ITU-T G.652A or ITU-T G.652B
    • Indoor (tight-buffered construction)
    • max att 1.0 db/km
    • max distance 1km
    • cheaper
  • OS2
    • Outdoor (loose-tube design)
    • are only compliant with ITU-T G.652C or ITU-T G.652D standards.
    • which means OS2 is explicitly applied to the low-water-peak fibers. These low-water-peak fibers are usually used for CWDM (Coarse Wavelength Division Multiplexing) applications.
    • appropriate for outdoor cases like street, underground and burial
    • max att 0.4db/km.
    • max distance 10 km

Connector

  • SC - bigger (more popular, older)
  • LC - smaller, half size of SC (Lucent, less popular, license fees)