1. Cable cross-section
2. Cable Specification
2.1 Introduction
The fibers are placed in a loose tube made of PBT. The tube is filled with a water-resistant filling compound. The tube is wrapped with a layer of PSP longitudinally. Between the PSP and the loose tube water-blocking material is applied to keep the cable compact and watertight. Two parallel steel wires are placed at the two sides of the steel tape, over which a thin PE inner sheath is applied. After the PSP is longitudinally applied over the inner sheath, the cable is completed with a PE outer sheath.
2.2 Fiber color code
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
Blue | Orange | Green | Brown | _ | _ | _ | _ | _ | _ | _ | _ |
2.4 Cable structure and parameter
SN | Item | Unit | Value |
1 | No. of fibers | count | 4 |
2 | No. of fibers per tube(max) | count | 4 |
3 | No. of elements | count | 1 |
4 | Tube diameter | mm | 2 |
5 | Outer sheath wall thickness | mm | 1.8 |
6 | Cable diameter | mm | 12.4 |
7 | Cable weight | kg/km | 150 |
8 | Short term tension | N | 3000 |
9 | Short term crush | N/100mm | 3000 |
Note: Mechanical sizes are nominal values.
3. Characteristic of Optical Cable
Mechanicalcharacteristic and test method | |||
Tensilestrength | conform to IEC 794-1-E1 | ||
Crush | conform to IEC 794-1-E3 | ||
Impact | conform to IEC 794-1-E4 | ||
Repeatedbending | conform to IEC 794-1-E6 | ||
Torsion | conform to IEC 794-1-E7 | ||
Flexing | conform to IEC 794-1-E8 | ||
Cablebend | conform to IEC 794-1-E11 | ||
Waterpenetration | conform to IEC 794-1-F5B | ||
Temperaturerequirement | Operation | - 40℃ ~ +60℃ | |
Installation | - 10℃ ~ +60℃ | ||
Storage/transportation | - 40℃ ~ +60℃ | ||
Temperaturecycling test | conform to IEC 794-1-F1 | ||
BendingRadius | unloaded | 10times of outer diameter | |
loaded | 20times of outer diameter | ||
4. Characteristic of Optical Fiber
G652D fiber information
| Mode field diameter (1310nm): | 9.2mm±0.4mm |
| Mode fielddiameter (1550nm): | 10.4mm±0.8mm |
| Claddingdiameter: | 125mm±1.0mm |
| Coatingdiameter: | 245mm±7mm |
| Cut offwavelength of cabled fiber (lcc): | £1260nm |
| Attenuationat 1310nm: | £0.35dB/km |
| Attenuationat 1550nm: | £0.21dB/km |
| Bending loss at 1550nm (100 turns, 30mm radius): | £0.05dB |
| Dispersion inthe range 1288 to 1339nm: | £3.5ps/(nm•km) |
| Dispersion at1550nm: | £18ps/(nm•km) |
| Dispersionslope at zero dispersion wavelength: | £0.092ps/(nm2•km) |
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