Technical Specification for GYTC8A B1.3 Fiber Optic Cable
1. Fiber Specifications
Description:
- The fiber is composed of three layers:
- Core: 9 μm high refractive index quartz glass.
- Cladding: 125 μm low refractive index glass.
- Coating: Protective resin layer (245 μm diameter).
Technical Requirements:
|
No
|
Item
|
Test Requirement
|
Test Standard
|
|
1
|
Core non-circularity
|
≤ 6%
|
ITU-T G.652
|
|
2
|
Cladding diameter
|
125.0 ± 0.7 μm
|
-
|
|
3
|
Core/Cladding concentricity error
|
≤ 0.6 μm
|
-
|
|
4
|
Cladding non-circularity
|
≤ 1.0%
|
-
|
|
5
|
Coating diameter
|
245 ± 10 μm
|
-
|
|
6
|
Cladding/Coating concentricity
|
≤ 12 μm
|
-
|
|
7
|
Attenuation coefficient
|
1310 nm: ≤ 0.35 dB/km
1550 nm: ≤ 0.21 dB/km
|
-
|
|
8
|
Zero dispersion slope
|
≤ 0.092 ps/(nm²·km)
|
-
|
|
9
|
Zero dispersion wavelength
|
1300–1324 nm
|
-
|
|
10
|
Polarization dispersion
|
≤ 0.20 ps/√km
|
-
|
|
11
|
Mode field diameter
|
1310 nm: 9.0 ± 0.4 μm
|
-
|
|
12
|
Cut-off wavelength
|
1170–1330 nm
|
-
|
|
13
|
Chromatic dispersion coefficient
|
1288–1339 nm: ≤ 3.4 ps/(nm·km)
1550 nm: ≤ 18 ps/(nm·km)
1625 nm: ≤ 22 ps/(nm·km)
|
-
|
2. Cable Structure
Components:
- Messenger wire, Web, Fiber, Fiber jelly, Loose tube, Water blocking yarn, Central strength member, Filler, Water blocking tape, Aluminium tape, PE Sheath.
Structure Parameters:
|
No
|
Item
|
Parameters
|
|
1
|
Tube/Fiber Color
|
1: Blue (Tube) / Blue (Fiber)
2: White / White
3: Yellow / Yellow
4: Green / (Missing Fiber Color)
|
|
2
|
Fiber core
|
12 fibers
|
|
3
|
Fibers per tube
|
6/12/24 fibers
|
|
4
|
Number of tubes
|
1/2/3 tubes
|
|
5
|
Loose tube outer diameter
|
1.7 mm
|
|
6
|
Central strength member
|
1.2 mm steel wire
|
|
7
|
Armoring material
|
Corrugated aluminium tape
|
|
8
|
Armoring thickness
|
0.15 mm aluminium + 0.05 mm coating (each side)
|
|
9
|
Galvanized steel strand wire
|
7 × 0.9 mm
|
|
10
|
Strand wire sheath thickness
|
1.5 mm
|
|
11
|
Neck dimensions (W×H)
|
1.6 × 2.2 mm
|
|
12
|
Outer sheath material
|
MDPE
|
|
13
|
Outer sheath thickness
|
2.0 mm
|
|
14
|
Cable dimensions
|
9.7 × 17.4 mm (±0.3 mm)
|
|
15
|
Cable weight
|
137 kg/km (-5% tolerance)
|
3. Performance Tests
3.1 Tensile Test
|
Parameter
|
Requirement
|
|
Test Standard
|
IEC 60794-1-21-E1
|
|
Long-term load
|
5000 N
|
|
Short-term load
|
10000 N
|
|
Test length
|
≥ 100 m
|
|
Duration
|
10 minutes
|
|
Attenuation limit
|
≤ 0.1 dB increase
|
3.2 Crush Test
|
Parameter
|
Requirement
|
|
Test Standard
|
IEC 60794-1-21-E3
|
|
Pressure load
|
1000 N/100 mm
|
|
Test length
|
100 mm
|
|
Duration
|
10 minutes
|
|
Attenuation limit
|
≤ 0.1 dB increase
|
3.3 Repeated Bending Test
|
Parameter
|
Requirement
|
|
Test Standard
|
IEC 60794-1-21-E6
|
|
Bending radius
|
≤ 22× cable diameter
|
|
Tensile load
|
55 N
|
|
Bending cycles
|
30 times
|
|
Attenuation limit
|
≤ 0.05 dB increase
|
3.4 Bending Test
|
Parameter
|
Requirement
|
|
Test Standard
|
IEC 60794-1-21-E11
|
|
Mandrel diameter
|
22× cable diameter
|
|
Duration
|
5 minutes
|
|
Attenuation limit
|
≤ 0.05 dB increase
|
3.5 Temperature Cycling Test
|
Parameter
|
Requirement
|
|
Test Standard
|
IEC 60794-1-22-F1
|
|
Temperature range
|
-20°C to +70°C
|
|
Sample length
|
≥ 2 km
|
|
Duration
|
24 hours
|
|
Attenuation limit
|
≤ 0.05 dB increase
|
3.6 Water Penetration Test
|
Parameter
|
Requirement
|
|
Test Standard
|
IEC 60794-1-22-F7
|
|
Head height
|
1 m
|
|
Sample length
|
1 m
|
|
Duration
|
24 hours
|
|
Decision criteria
|
No water leakage
|