1. Cable Construction
1.1 Cable cross-section
2. Cable Specification
2.1 Sheath marking
2011 GYXTW XXB1.3 (G.652D) XXXXm | |
OPTIICTIMES | : Manufacturer’s brand |
2011 | : Manufacture year |
GYXTW | : Cable type |
XXB1.3 (G.652D) | : XX cores single-mode optical fiber (ITU-T Rec. G.652D)400 |
4000m | : Mark of meters |
*The marking is printed every 1 meter; **”G.652D” means ITU-T Rec. Low Water Peak (LWP) G.652 Single Mode Optical Fiber. |
2.2 The color of marking is white, but if the remarking is necessary, the yellow color marking shall be printed newly on a different position.
2.3 An occasional unclear of length marking is permitted if both of the neighboring markings are clear;
2.4 The both cable ends are sealed with heat shrinkable end caps to prevent water ingress.
2.6 Cable structure and parameter
Fiber number | Tube diameter | Steel wire diameter | Sheath thickness (Nominal*) | Overall diameter (Nominal**) | Weight (Approx.) |
mm | mm | mm | mm | kg/km | |
2~12 | 2.5 | 1.0 | 2.3 | 7.6-9.0 | 86 |
* The nominal sheath thickness may vary by ±0.2mm.
** The nominal outer diameter and height may vary by ±0.2mm.
3. Fiber Properties
3.1 The properties of single mode optical fiber (ITU-T Rec. G.652D)
Item | Specification |
Fiber type | Single mode |
Fiber material | Doped silica |
Attenuation coefficient @ 1310 nm @ 1383 nm @ 1550 nm @ 1625 nm | £ 0.36 dB/km £ 0.32 dB/km £ 0.22 dB/km £ 0.30 dB/km |
Point discontinuity | £ 0.05 dB |
Cable cut-off wavelength | £ 1260 nm |
Zero-dispersion wavelength | 1300 ~ 1324 nm |
Zero-dispersion slope | £ 0.093 ps/(nm2.km) |
Chromatic dispersion @ 1288 ~ 1339 nm @ 1271 ~ 1360 nm @ 1550 nm @ 1625 nm | £3.5 ps/(nm. km) £5.3 ps/(nm. km) £18 ps/(nm. km) £22 ps/(nm. km) |
PMDQ (Quadrature average*) | £0.2 ps/km1/2 |
Mode field diameter @ 1310 nm | 9.2±0.4 um |
Core / Clad concentricity error | £ 0.5 um |
Cladding diameter | 125.0 ± 0.7 um |
Cladding non-circularity | £1.0% |
Primary coating diameter | 245 ± 10 um |
Proof test level | 100 kpsi (=0.69 Gpa), 1% |
Temperature dependence 0oC~ +70oC @ 1310 & 1550nm | £ 0.1 dB/km |
* PMDQ is a link of 20 cable sections (M) and a probability level of 0.01% (Q).
4. Characteristic of Optical Cable
4.1 Mechanical & environmental characteristics
4.1.1 Cable bending radius: 10 x cable diameter (during operation)
20 x cable diameter (during installation)
4.1.2 Temperature range
Operating temperature range | -40oC to +60oC |
Storage / Transport temperature range | -50oC to +70oC |
Installation temperature range | -20oC to +50oC |
5. Packing and Marking
5.1 Packing
5.1.1 Each single length of cable shall be reeled on Non-fumigated Full Wooden Drum suitable for long distance shipment.
5.1.2 Covered by plastic buffer sheet.
5.1.3 Sealed by strong wooden battens.
5.1.4 At least 1 m of inside end of cable will be reserved for testing.
5.1.5 Drum length
5.1.5.1 Standard drum length is 5000m±3%;
5.1.5.2 Single length not less than 95% of standard length per drum shall be permitted for quantity not exceeding 10% of the total supply;
5.1.5.3 Total quantity is at least the ordered quantity.
5.2. Drum Marking
5.2.1 Cable drum
- Manufacturer brand;
- Roll-direction arrow;
- Cable outer end position indicating arrow;
- The word “OPTICAL FIBER CABLE”;
- Origin, The word “MADE IN CHINA”;
- Caution plate indicating the correct method for loading, unloading and convey the cable;
- Other customer information such as contract no., project no., and delivery destination. (if needed)
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