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Flat Twin Duplex Indoor Cable use 900μm or 600μm flame-retardant tight buffer fiber as optical communication medium.
The tight buffer fiber wrapped with a layer of aramid yarn as strength member units,such unit is extruded with a layer of PVC or LSZH material as inner jacket.
Then the cable is completed with a layer of flat PVC or LSZH(Low smoke,Zero halogen,Flame-retardant) jacket as out sheath .
Cable construction
| Technical Parameters: | |||||||
| Out Diameter(MM) | 2.8×5.8 | Weight(KG) | 40 | ||||
| 3.0×6.2 | 40 | ||||||
| Inner Diameter(MM) | 0.9 | ||||||
| 0.9 | |||||||
| Storage temperature（℃） | -20+60 | ||||||
| Min Bending Radius(mm) | Long term | 10D | |||||
| Min Bending Radius(mm) |
Short term | 20D | |||||
| Min allowable Tensile Strength(N) |
Long term | 300 | |||||
| Min allowable Tensile Strength(N) |
Short term | 1000 | |||||
| Crush Load (N/100mm) | Long term | 500 | |||||
| Crush Load (N/100mm) | short term | 1000 | |||||
The standard color of fiber and tube
| Standard Colour Identification | ||||||||
| No. | 1 | 2 | ||||||
| Color | Yellow | White | ||||||
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 dispersion slope | nm | ≤0.092 | ≤0.091 | —- | —- | —- | |
| PMD Maximum Individual Fiber | ≤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 | |
| Discontinuity | |||||||
| Difference backscatter coefficient |
dB/km | ≤0.05 | ≤0.03 | ≤0.08 | ≤0.10 | ≤0.08 | |
| Attenuation uniformity | dB/km | ≤0.01 | ≤0.01 | ||||
| Core diameter | 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 concentricity 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 cable shall be 2 km. Other cable length is also available | |||||||
| if required by customer |
