Appendix2. Recommended parameters to be included in the link
losses calculation.
Link losses
dB (Maximum loss)
Cable loss (for standard SMF)
0.5dB/km
Splice loss (for standard SMF)
0.1
Connectors loss
0.5
Appendix3. Optical performance for standard (ITU-T G652) Single
Mode Fibres
PARAMETER
Attenuation at water peak
REQUIREMENT
≤2.1 dB/km
Attenuation coefficient at 1310 nm
≤ 0.5 dB/km
Attenuation coefficient at 1550 nm
Optical discontinuities at 1310 and1550 nm
≤ 0.4 dB/km
< 0.1 dB
Chromatic dispersion between 1285and 1330 nm
Chromatic dispersion at 1550
Cable cutoff wavelength
≤3.5 ps/nm·km
≤ 18 ps/nm· km
≤1260 nm
Appendix4. Optical Performance for Multimode fibres (ITU-T G651.1)
PARAMETER
Attenuation coefficient at 850 nm
Attenuation coefficient at 1300 nm
Optical discontinuities at 1310 and 1550 nm
Bandwidth Distance Product at 850 nm
Bandwidth Distance Product 1300 nm
REQUIREMENT
≤3.0 dB/km
≤0.7 dB/km
< 0.1 dB
≤160 MHz.km
≤500 MHz.km
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