ITU-T G654.E Bend-Insensitive Fiber

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SSMF(Ref.)

0.2

80

/

LL

0.18

80

1.6

ULL

0.17

80

2.3

ULL

0.15

80

3.8

LL-LAF

0.18

130

4.9

ULL-LAF

0.16

110

5.8

ULL-LAF

0.16

130

6.4

1

Mode field diameter at 1550 nm

12.5 ± 0.5 µm

2

Core to cladding concentricity error

≤0.6 µm

3

Cladding diameter

125.0 ± 1.0 µm

4

Cladding non circularity

≤1.0 %

5

Coating material

UV curable acrylate

6

Coating diameter

245 ± 10 µm (Uncolored)

7

Cladding/coating concentricity error

≤12.0 µm

8

Fiber curl

≥4.0 meters

Optical characteristics

Attenuation at 1550 nm

Individual

≤0.175 dB/km

10

≥90% of total (length basis) *1

< 0.170 dB/km

11

Attenuation at 1625 nm

Individual

≤0.195 dB/km

12

≥90% of total (length basis) *1

< 0.190 dB/km

13

Attenuation point discontinuity

≤0.05 dB

14

Chromatic dispersion at 1550nm

17~ 23 ps/nm/km

Chromatic dispersion slope at 1550nm

0.05~ 0.07 ps/nm2/km

16

Cable cut-off wavelength (cc)

≤1530 nm

17

Maximum individual fiber PMD*2

≤0.1 ps/rkm (Measured by loosely coiled fiber)

18

≤0.15 ps/rkm (Measured on spool)

19

Note *1: “90% of total” will be only applied to whole length of a purchase order with the total quantity of 4,000 km or more.
Note *2: Since PMD value may change when fiber is cabled, actual PMD values in a cable shall be confirmed by cable manufacturer. Under appropriate cable design, PureAdvance-125 specification supports network design requirements for a 0.20 ps/r-km of maximum cable PMD link design value recommended by ITU-T G.654.E.

Mechanical characteristics

20

Proof stress level

1.2 % (0.86 Gpa) for 1second or equivalent

21

Coating strip force (F)

1.3 N≤F≤8.9 N (peak)

22

 N ≤F ≤5 N (average)

23

Macrobend loss at 1550 and 1625 nm(60mmφ, 100turns)

≤0.10 dB

24

Dynamic tensile strength (median; 0.5 m)

≤3.8 GPa (≥550 kpsi) (unaged)

25

≥3.0 GPa (≥440 kpsi) (aged)

26

Dynamic Fatigue

20 (nominal value)

Environmental Characteristics

27

Induced attenuation change at 1550 and 1625 nm

28

-60ºC ~ +85ºC temperature cycling

≤0.05 dB/km

29

-10ºC ~ +85ºC/98%RH temperature humidity cycling

≤0.05 dB/km

30

+23ºC water immersion

≤0.05 dB/km

31

+85ºC heat aging

≤0.05 dB/km

32

+85ºC/85%RH damp heat

≤0.05 dB/km