ITU-T Standards

The international tensions Union – Telecoms division (ITU-T) makes recommendations on all aspects of international telecoms systems including fiber optics.

ITU-T Standards

  1. Optical Insertion Loss (OIL) Testing
    • Link Budget Dependent
  2. Optical Return Loss (ORL) Testing
    • > 27 dB Required
    • > 40 dB Optimal
  3. Chromatic Dispersion
    • < 123 ps for 2.5 Gbps (OC-48)
    • < 30 ps for 10 Gbps (OC-192)
  4. PMD
    • < 40 ps for 2.5 Gbps (OC-48)
    • < 10 ps for 10 Gbps (OC-192)
  5. PMD Coefficient
    • No Standard Defined
  6. Splice Loss
    • < .1 for fusion splice
  7. Connector Loss
    • < .5 dB Required
    • < .3 dB Optimal
  8. Connector Reflectance
    • > -27 dB Required
    • > -40 dB Optimal

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