FIBER
CORE STANDARD | - | ITU-T
G652D |
Fiber
Origin | - | G7/Japan |
Mode
field diameter at 1310nm wavelength | μm | 9.2
± 0.4 |
Mode
field diameter at 1550nm wavelength | μm | 10.4
± 0.5 |
Core
– clad concentricity | μm | ≤
0.5 |
Cladding
diameter | μm | 125
± 0.7 |
Cladding non - circularity | % | ≤ 0.7 |
Coating diameter | μm | 245
± 5 |
Cutoff
wavelength | nm | ≤
1260 |
Refractive
index | | Ladder
form |
Effective index of refraction Neff (1310nm
wavelength) | | ≤
1.4677 |
Effective index of refraction Neff (1550nm
wavelength) | | ≤
1.4682 |
Chromatic
Dispersion index at λ 1285 nm - 1330 nm | ps/nm/km | ≤
3.5 |
Chromatic
Dispersion index at λ = 1550 nm | ps/nm/km | ≤
18 |
Zero Dispersion wavelength | nm | 1310
– 1324 |
Dispersion slope | ps/nm2/km | ≤
0.092 |
Attenuation
at λ = 1310 nm | dB/km | ≤
0.38 |
Attenuation
at λ = 1550 nm | dB/km | ≤
0.24 |
Fiber
color coding | - | EIA/TIA-598 |
GENERAL CHARACTERISTICS OF OPTICAL
CABLE |
Standard | | -
Conform TCVN 8665-2011 -
Conform IEC and EIA standard -
ITU-T G.652.D Standard for core fiber. |
Cable structure |
CENTRAL
STRENGTH MEMBER (CSM) |
Material | | Non
metal FRP (Fibregrass Reinforce with Plastic) |
Diameter | mm | ≥
1.5 if cable has less than 48 cores ≥
2.1 if cable has more than or equal to 48 cores |
BUFFER TUBE |
Type | | -
Buffer tube is made of loose buffer tube technology. -
Loose buffer tube can be easily separated into sections by specialized tools
that do not affect the fiber inside. |
Number of fiber per
tube | | 6
FO if cable has less than 48 cores. 12 FO if cable is more than 48 cores |
Color Coding | | EIA/TIA-598 |
Filling compound | | Buffer
tubes contains filling compound |
Stranding | | SZ
stranded around the CSM(FRP), or equivalent |
JACKET
(SHEATH) |
Material | | HDPE (High Density
Poly-Ethylen), black |
Outer
sheath thickness (HDPE) | mm | ≥
1.4 |
OTHERS |
Rip-cord | | Assembled
inside outer sheath (HDPE)
and Armor layer (Glass yarn) |
Water blocking tape | | Wrap
around total loose tubes, waterproof |
Water blocking yarn | | Wrap
around CSM |
Outer Strength Member | | Glass Yarn |
Armor layer
between Outer sheath and Outer
Strength Member
for waterproof, moisture protection, and rodent species prevention | | Corrugated steel tape with
polymer coating on both side |
Sheath marking | - | Engraved
name / symbol and sign as required by investors including: name of
manufacturer- SCTV, type of cable, month-year of production, length marking
in meter. |
Test specifications
certification | - | Cable will have Type Test performed by
manufacturer at the factory international IEC / EIA standards or equivalent: * Torsion
Test : - TIA/EIA-455-85A or IEC-794-1-E7 (IEC 60794-1-2 Method E7) * Tensile
& Fiber strain Test - IEC-794-1-E1. (IEC 60794-1-2 Method E1) * Impact Test - TIA/EIA-455-25B or IEC-794-1-E4 * Flexing Test - TIA/EIA-455-104 or IEC-794-1-E6 * Crush
resistance Test - TIA/EIA-455-41A or IEC-794-1-E3 * Bending Test - IEC-60794-1-E11 * Water
penetration Test -
TIA/EIA-455-82 or IEC-794-1-F5 * Temperature
Test - TIA/EIA-455-3A or IEC-794-1-F1 * Drip Test -
IEC-794-1-E14 After test, the optical cable is not
broken, sheath is not cracked, growth of attenuation does not exceed 0.1 dB
at 1550nm, waterproof cable. |
Other requirements: *
The usual length of each figure 8 cable reel is 4 Km ± 1% (unless other requirements of the
investor) *
Wooden drum is provided with cable and marked arrows indicate the direction
of rotation of the cable reel. |