Fiber Optic ｄｒｏｐ CABLE
FIBER OPTIC CABLE GJYXFCH-1B6
2.1 Introduction
The optical fiber unit is positioned in the center. Two parallel fiber reinforced plastics (KFRP) are placed at two sides. A steel wire as the additional strength member is also applied. Then the cable is completed with black LSZH sheath.
2.2 Fiber color code
Fiber color starts from No. 1 Blue.
2.3 Optical fiber type and properties
Item | Unit | Specification | |
G. 657A | |||
Mode field diameter | 1310nm | mm | 8.6 ± 0.4 |
Cladding diameter | mm | 125.0 ± 0.7 | |
Cladding non-circularity | % | £1.0 | |
Core concentricity error | mm | £0.5 | |
Coating diameter | mm | 245 ± 5 | |
Coating/cladding concentricity error | mm | £12 | |
Cable cut-off wavelength | nm | £ 1260 | |
Attenuation Coefficient | 1310nm | dB/km | £0.35 |
1550nm | dB/km | £0.21 | |
Macro-bend loss (1 turn,7.5mm radius) | 1550nm | dB/km | £0.5 |
1625nm | dB/km | £1.0 | |
Proof stress level | kpsi | ≥100 | |
Other parameters meet standard ITU-T G.657
2.4 Cable structure and parameter
Item | Parameters | |
No. of fibers | count | 1 |
Strength member | Diameter | 0.58 mm |
Material | FRP | |
Messenger wire | Diameter | 1.0 mm |
Material | Steel wire | |
Outer jacket | Diameter | 5.2(±0.2)*2.0(±0.1) mm |
Material | LSZH | |
Color | Black | |
Tensile performance | Short term | 600 N |
Long term | 300 N | |
Crush | Short term | 2200 N/100mm |
Long term | ||
Cable attenuation | ≦ 0.38dB/km at 1310nm, ≦ 0.25 dB/km at 1550nm | |
Cable weight (Approx.) | 18.3 kg/km | |
3. Characteristic of Optical Cable
3.1 Min. bending radius for installation (Without messenger wire)
Static: 15
Dynamic: 30
3.2 Application temperature range
Operation: - 20℃ ~ +70℃
Installation: -20℃ ~ +70℃
Storage/transportation: - 20℃ ~ +70℃
3.3 Main mechanical & environmental performance test
Item | Test Method | Acceptance Condition |
Tensile Strength IEC 60794-1-2-E1 | - Load: Short term tension - Length of cable: ≥ 50m - Load time: 1min | - Fiber strain ≤ 0.4% - No fiber breakage and no sheath damage. |
Crush Test IEC 60794-1-2-E3 | - Load: Short term crush - Load time: 1min | - No fiber breakage and no sheath damage. |
Impact Test IEC 60794-1-2-E4 | - Points of impact: 3 - Times of per point: 1 - Impact energy: 1J | - No fiber breakage and no sheath damage. |
Repeated Bending IEC 60794-1-2-E6 | - Bending radius: 30x H - No. of cycle: 300 -Load: 20N | - Fiber additional attenuation should be no more than 0.4dB; -There shall be no damage to the cable elements under visual inspection. |
Torsion IEC 60794-1-2-E7 | - Length: 1m - Twist angle: ±180° - No. of cycle: 20 | - No fiber breakage and no sheath damage. |
Temperature Cycling IEC 60794-1-2-F1 | -Temperature: -20oC~+70oC - Time of each step: 8h - Number of cycle: 2 | - Fiber additional attenuation should be ≤ 0.4dB/km; - There shall be no damage to the cable elements under visual inspection. |