Parameter

Standard Single Mode Fiber per ITU-T G.652D

Non-zero Dispersion Shifted fiber per ITU-T G.655

Non-zero Dispersion Shifted fiber per ITU-T G.656

Units

Fiber Code

9

8

7

Attenuation, Loose Tube Cables

@1310nm

≤0.35

N/A

N/A

dB/km

@1550nm

≤0.22

≤0.22

≤0.22

dB/km

@1625nm

≤0.25

≤0.26

≤0.26

dB/km

Attenuation, Tight Buffer
or Semi-Tight

Cables

@1310nm

≤0.38

N/A

dB/km

@1550nm

≤0.28

N/A

dB/km

Chromatic Dispersion

between 1260 and 1360nm
(O Band)

≤3.5

N/A

N/A

ps/(nm*km)

between 1460 and 1530nm
(S Band)

N/A

N/A

2.0-7.0

ps/(nm*km)

between 1530 and

1565nm (C Band)

≤18

1.0-10.0

7.0-10.0

ps/(nm*km)

between 1565 and

1625nm (L Band)

≤22

7.0-12.0

10.0-14.0

ps/(nm*km)

Zero Dispersion Wavelength

1310±11

1530-1560

1460-1565

nm

Zero Dispersion Slope

0.093

0.093

0.093

ps/(nm2.km)

Point Discontinuity at 1300nm& 1550nm

0.1

0.1

0.1

dB

Mode Field

Diameter

@1300nm

9.3±0.5

N/A

N/A

um

@1550nm

10.4±0.8

8.5±0.6

9.0±0.5

um

Cable Cut-off   Wavelength

≤1260

≤1450

≤1450

nm

PMD (Individual fiber)

≤0.2

≤0.2

≤0.2

ps/km   1/2

Cladding Diameter

125±1

125±1

125±1

um

Core/Cladding Concentricity Error

≤0.5

≤0.5

≤0.6

um

Cladding Non-Circularity

≤1.0

≤1.0

≤1.0

%

Coating Non-Circularity

≤6.0

≤6.0

≤6.0

%

Primary Coating Diameter

245±10

245±10

245±10

um

Proof-Test Level

100 (0.7)

100 (0.7)

100 (0.7)

Kpsi/GN/m2

Fatigue Coefficient

≥20

≥20

≥20

Temperature Dependence between 0℃ ~
+70℃ @ 1310 & 1550nm

0.1

0.1

0.1

Db/km