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GYXTW (metal strengthening member, steel-polyethylene bonded sheath with steel wire entrained, central beam tube type full-filled outdoor optical cable for communication) The structure of the optical cable is to place the loose tube in the center of the cable, and the single-mode optical fiber is sheathed by the A loose tube made of high modulus plastic filled with waterproof compound. The loose tube is longitudinally wrapped with water-blocking tape and steel belt, and the two sides of the cable core are polyethylene sheathed with two parallel steel wires as reinforcements.
Cable construction details
| Number of fiber | 1~24core | |||||||
| Loose tube | material | PBT | ||||||
| diameter | Ф2.2(outer/inner) | |||||||
| Tube-filling | Tube filling compound | |||||||
| Steel wire | size | 0.8mm | ||||||
| Number | 2 | |||||||
| Outer sheath | material | PE,HDPE,LDPE | ||||||
| diameter | 1.8±0.2mm | |||||||
Fiber Color
| No. | 1 | 2 | 3 | 4 | 5 | 6 |
| Color |  |
 |
 |
 |
 |
 |
| No. | 7 | 8 | 9 | 10 | 11 | 12 |
| Color |  |
 |
 |
 |
 |
 |
| No. | 13 | 14 | 15 | 16 | 17 | 18 |
| Color |  |
 |
 |
 |
 |
 |
| No. | 19 | 20 | 21 | 22 | 23 | 24 |
| Color |  |
 |
 |
 |
 |
 |
Tube Color
Cable Mechanical characteristic
| core | Cable diameter | weight | |||||
| 1~24 | 8.0mm+-0.3mm | 65kg/km+-10kg | |||||
| Temperature range | -40+70 | —– | |||||
| Min Bending Radius(mm) | Long term | 10D | |||||
| Min Bending Radius(mm) |
Short term | 20D | |||||
| Min allowable Tensile Strength(N) |
Long term | 1200 | |||||
| Min allowable Tensile Strength(N) |
Short term | 1500 | |||||
| Operation temperature （℃） |
-40+70 | ||||||
| Installation temperature（℃） |
-20+60 | ||||||
| Storage temprature （℃） |
-40+70 | ||||||
Fiber characteristic
| Fiber style | Unit | SM G652 |
SM G652D |
MM 50/125 |
MM 62.5/125 |
MM OM3-300 |
|
| condition | nm | 1310/1550 | 1310/1550 | 850/1300 | 850/1300 | 850/1300 | |
| attenuation | dB/km | ≤ | ≤ | ≤ | ≤3.0/1.0 | ≤3.0/1.0 | |
| 0.36/0.23 | 0.34/0.22 | 3.0/1.0 | —- | —- | |||
| Dispresion | 1550nm | Ps/(nm*km) | —- | ≤18 | —- | —- | Dispresion |
| 1625nm | Ps/(nm*km) | —- | ≤22 | —- | —- | ||
| Bandwith | 850nm | MHZ.KM | —- | —- | ≧400 | ≧160 | Bandwith |
| 1300nm | MHZ.KM | —- | —- | ≧800 | ≧500 | ||
| Zero dispersion wavelength | nm | 1300-1324 | ≧1302, ≤1322 |
—- | —- | ≧ 1295, ≤1320 |
|
| Zero dispresion slope | nm | ≤0.092 | ≤0.091 | —- | —- | —- | |
| PMD Maximum Individual Fibr | ≤0.2 | ≤0.2 | —- | —- | ≤0.11 | ||
| PMD Design Link Value | Ps(nm2*k m) |
≤0.12 | ≤0.08 | —- | —- | —- | |
| Fibre cutoff wavelength λc | nm | ≧ 1180, ≤1330 |
≧1180, ≤1330 |
—- | —- | —- | |
| Cable sutoff 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) |
—- | —- | 0.200+/ -0.015 |
0.275+/-0. 015 |
0.200+/-0 .015 |
||
| Step(mean of bidirectional measurement) |
dB | ≤0.05 | ≤0.05 | ≤0.10 | ≤0.10 | ≤0.10 | |
| Irregularities over fiber length and point |
dB | ≤0.05 | ≤0.05 | ≤0.10 | ≤0.10 | ≤0.10 | |
| Dicontinuity | |||||||
| Difference backscatter coefficient |
dB/km | ≤0.05 | ≤0.03 | ≤0.08 | ≤0.10 | ≤0.08 | |
| Attenuation uniformity | dB/km | ≤0.01 | ≤0.01 | ||||
| Core dimater | um | 50+/-1.0 | 62.5+/-2.5 | 50+/-1.0 | |||
| Cladding diameter | um | 125.0+/-0.1 | 125.0+/-0.1 | 125.0+/-0.1 | 125.0+/-0.1 | 125.0+/-0.1 | |
| Cladding non-circularity | % | ≤1.0 | ≤1.0 | ≤1.0 | ≤1.0 | ≤1.0 | |
| Coating diameter | um | 242+/-7 | 242+/-7 | 242+/-7 | 242+/-7 | 242+/-7 | |
| Coating/chaffinch concentrically error |
um | ≤12.0 | ≤12.0 | ≤12.0 | ≤12.0 | ≤12.0 | |
| Coating non circularity | % | ≤6.0 | ≤6.0 | ≤6.0 | ≤6.0 | ≤6.0 | |
| Core/cladding conentricity error | um | ≤0.6 | ≤0.6 | ≤1.5 | ≤1.5 | ≤1.5 | |
| Curl(radius) | um | ≤4 | ≤4 | —- | —- | —- | |
Package
| 1.Packing material: Wooden drum | |||||||
| 2.Packing length: standard length of the cable shall be 2 km. Other cable length is also available | |||||||
| if required by customers |
Cable marking and cable reel marking
The cable sheath shall be marked with white characters according to customer’s requirement.
