Factory supplied “Optical Fiber Secondary Coating ” - Single-mode G657B3 super bending resistant optical fiber – GELD

Attenuation

1310nm

dB/km

≤0.35

1383nm

dB/km

≤0.35

1550nm

dB/km

≤0.21

1625nm

dB/km

≤0.23

Attenuation vs. Wavelength
Max. A difference

1285~1330nm, @1310nm

dB/km

≤0.03

1525~1575nm, @1550nm

dB/km

≤0.02

  Zero Dispersion Wavelength(λ₀)

–

nm

1300~1324

Zero Dispersion Slope(S₀)

–

ps/(nm2·km）

≤0.092

（PMD)

Max. Individual Fiber

–

ps/√km

≤0.1

Link Design Value（M=20，Q=0.01%)

–

ps/√km

≤0.06

Typical value

–

ps/√km

0.04

Cable cut-off wavelength（λ_cc)

–

nm

≤1260

Mode Field Diameter（MFD)

1310nm

μm

8.2~9.0

1550nm

μm

9.1~10.1

Effective Group Index of Refraction(Neff)

1310nm

1.468

1550nm

1.469

Point discontinuity

1310nm

dB

≤0.05

1550nm

dB

≤0.05

Cladding Diameter

–

μm

125.0±0.7

Cladding Non-Circularity

–

%

≤0.7

Coating Diameter

–

μm

235~245

Coating-Cladding Concentricity Error

–

μm

≤12.0

Coating Non-Circularity

–

%

≤6.0

Core-Cladding Concentricity Error

–

μm

≤0.5

Curl(radius)

–

m

≥4

Delivery Length

–

km per spool

Max. 50.4

Proof Test

–

N

≥9.0

–

%

≥1.0

–

kpsi

≥100

Macro-bend Induced Loss

1Turn Around a Mandrel of 10mm Radius

1550nm

dB

≤0.03

 1 Turn Around a Mandrel of 7.5mm Radius

1625nm

dB

≤0.1

1 Turn Around a Mandrel of 7.5mm Radius

1550nm

dB

≤0.08

 1 Turn Around a Mandrel of 7.5mm Radius

1625nm

dB

≤0.25

 1 Turn Around a Mandrel of 5mm Radius

1550nm

dB

≤0.15

1 Turn Around a Mandrel of ,5mm Radius

1625nm

dB

≤0.45

Coating stripping force

Typical average value

N

1.5

Peak value

N

1.3~8.9