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TFO XtremeBend Plus? (G.657.B3)

With bending radius R5mm, TFO XtremeBend Plus? fibre provides excellent macrobending performance 

and optical performance, this makes it easier for the network designers and operators to deal with much

more challenging installations and environments, widely used in the applications where ultra low bending-loss 

at small bending radius are needed, such as FTTH, enterprise network, etc. 

 

TFO XtremeBend Plus? fibre exceeds the ITU-T Recommendation G.657.B3 and IEC 60793-2-50 type B6.b3 

optical Fiber Specification, and fully compatible with ITU-T G.652.D and IEC 60793-2-50 type B1.3 fibre.

TFO XtremeBend Plus? (G.657.B3)

Characteristics

Conditions

Parameters

Unit

Optical properties

Attenuation Coefficient

1310 nm

0.34

dB/km

1285-1330 nm

0.37

dB/km

1383 nmafter hydrogen aging

0.31

dB/km

1490 nm

0.23

dB/km

1550 nm

0.20

dB/km

1525 - 1575 nm

0.21

dB/km

1625 nm

0.22

dB/km

Mode Field Diameter(MFD)

1310 nm

8.8 ± 0.4

μm

1550 nm

10.0 ± 0.5

μm

Cut-Off Wavelength

Cable Cut-Off

1260

nm

Chromatic Dispersion

Zero Dispersion Wavelength

1300 - 1324

nm

Zero Dispersion Slope

0.090

ps/nm2/km

Dispersion Coefficient

1285 - 1339 nm

|3.4|

ps/nm/km

1550 nm

18.0

ps/nm/km

1625 nm

22.0

ps/nm/km

Polarisation Mode Dispersion

PMD Coefficient

Uncabled  fibre

0.10

ps/√km

PMD link design value

0.06

ps/√km

Point Discontinuity

1310 nm

0.05

dB

1550 nm

0.05

dB

Effective Group Refractive Index

1310 nm

1.4671

1550 nm

1.4675

1625 nm

1.4680

Geometrical Properties

Core Non-circularity

6

%

Cladding Diameter

125.0 ± 0.5

μm

Core/Cladding Concentricity Error

0.5

μm

Cladding Non-Circularity

0.7

%

Coating Diameter

242 ± 5

μm

Coating/Cladding Concentricity Error

8

μm

Mechanical properties

Proof Test

Fibre strain

1

%

Fibre load

9

N

Stress

100

kpsi

Dynamic Stress Corrosion Susceptibility Factor nd

Unaged

20

Aged30 days @ 85, 85% R.H.

20

Macro Bending Sensitivity

1 turns of 10 mm radius, 1550 nm

0.03

dB

1 turns of 10 mm radius, 1625 nm

0.1

dB

1 turns of 7.5 mm radius, 1550 nm

0.08

dB

1 turns of 7.5 mm radius, 1625 nm

0.25

dB

10 turns of 5 mm radius, 1550 nm

0.15

dB

10 turns of 5 mm radius, 1625 nm

0.45

dB

Coating Strip Force

Peak value

1.3 - 8.9

N

Fibre Curl

4

m

Environmental Properties

Accelerated Ageing30days @ 85 85% R.H.

Induced attenuation1310 and 1550 nm

0.05

dB/km

Dry heat aging30days @ 85

Induced attenuation1310 and 1550 nm

0.05

dB/km

Temperature Cycling -60- +85

Induced attenuation1310 and 1550 nm

0.05

dB/km

Water Soak30 days @ 23

Induced attenuation1310 and 1550 nm

0.05

dB/km

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