1) Fiber Allocation Scheme
Fiber number | Tube number | Fiber per tube | Fiber type |
2-48 | 1-4 | 2-12 F/Tube | G652D, G657A1 |
2) Cable construction details
Items | Description |
Number of fiber | 2-48 cores |
Moisture Barrier | Water blocking system |
Ripcord Count | 2 |
FRP strength member | 1 |
Loose tube | material | PBT |
color | Blue, Orange, Green, Brown |
diameter | Ф2.4mm |
Tube-filling | material | Tube filling compound |
Outer sheath | material | PE,LSZH( can be required) |
Thickness | appro. 1.5 mm |
color | Black (can be required) |
3) Standard color of fiber and tube
The color code of the tubes and the individual fibers, shall be in accordance with the table as below:
Standard Colour Identification |
|
No. | 1 | 2 | 3 | 4 | 5 | 6 |
Color | Blue | Orange | Green | Brown | Slate | White |
No. | 7 | 8 | 9 | 10 | 11 | 12 |
Color | Red | Black | Yellow | Violet | Pink | Aqua |
Color 13~24 will be marked with a black tracer.For black color no need marked black tracer, will use nature color instead. |
Note: The color can be required by customers.
4) Cable Mechanical characteristic
Items | Cable diameter | Weight |
2 cores to 48 cores | Appro. 12.5mm | Appro. 130kg/km |
Installation Temperature range | -40-+70℃ |
Operation and transport temperature | -40-+70℃ |
Min Bending Radius(mm) | Long term | 10D |
short term | 20D |
Allowable Tensile Strength(N) | Long term | 300 |
short term | 1000 |
Crush Load (N/100mm) | Long term | 300 |
short term | 1000 |
5) Requirement for Order
(1) Fiber sort: Single mode:G652D,G657A1
(2) Fiber brand: YOFC, Corning, Fiberhome,Fujikura,OFS etc.
(3) The fiber and tube color: according to stranded color, can be required.
(4) The cable Size: shall be in accordance with the table, can be required.
(5) Length of cable: generally is 2KM, can be required.
(6) Other requirement: can be negotiated.
6) Fiber Characteristic
Fiber Style | Unit | SM G652D | SM G657A1 |
Condition | nm | 1310/1550 | 1310/1550 |
Attenuation | dB/km | ≤0.36/0.22 | ≤0.36/0.22 |
Dispersion | 1310nm | Ps/(nm*km) | ≤18 | ≤18 |
1550nm | Ps/(nm*km) | ≤22 | ≤22 |
Bandwidth | 850nm | MHZ. KM | ..... | ..... |
1300nm | MHZ. KM | ..... | ..... |
Zero dispersion wavelength | nm | ≧1302, ≤1322 | ≧1302, ≤1322 |
Zero dispersion slope | nm | ≤0.091 | ≤0.091 |
PMD Maximum Individual Fiber | Ps/km | ≤0.2 | ≤0.2 |
PMD Design Link Value | Ps(nm2*km) | ≤0.08 | ≤0.08 |
Fiber cutoff wavelength λc | nm | ≧1180, ≤1330 | ≧1180, ≤1330 |
Cable cutoff wavelength λcc | nm | ≤1260 | ≤1260 |
MFD | 1310nm | um | 9.2±0.4 | 9.2±0.4 |
1550nm | um | 10.4±0.8 | 10.4±0.8 |
Numerical Aperture(NA) |
| ...... | ...... |
Step(mean of bidirectional measurement) | dB | ≤0.05 | ≤0.05 |
Irregularities over fiber length and point discontinuity | dB | ≤0.05 | ≤0.05 |
Difference backscatter coefficient | dB/km | ≤0.03 | ≤0.03 |
Attenuation uniformity | dB/km | ≤0.01 | ≤0.01 |
Core diameter | um | ...... | ...... |
Cladding diameter | um | 125.0±0.1 | 125.0±0.1 |
Cladding non-circularity | % | ≤1.0 | ≤1.0 |
Coating diameter | um | 242±7 | 242±7 |
Coating/chaffinch concentrically error | um | ≤12.0 | ≤12.0 |
Coating non circularity | % | ≤6.0 | ≤6.0 |
Core/cladding concentricity error | um | ≤0.6 | ≤0.6 |
Curl(radius) | um | ≤4 | ≤4 |