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SM STRANDED LOOSE TUBE NON-METALLIC STRENGTH MEMBER NON-ARMORED CABLE
1.1 General Design
OpticalFiber is constructed of a germanium doped silica based core with a pure silicacladding which meets ITU-T G.652 standard. Two layers of UV curable acrylateprotective coating are applied over the cladding to provide maximum fiberlifetime.
1.2 G.652.D fiber
| 1) Construction | |
| Mode Field Diameter @ 1310 nm | 9.2 +/-0.4 µm |
| Core-Cladding concentricity error | ≤0.4 µm |
| Cladding diameter | 125 +/-1 µm |
| Cladding non-circularity | ≤1 % |
| Primary coating material | UV curable acrylate |
| Primary coating Diameter | 250 +/-15 µm(Colored) |
| 2) Optical Characteristics | |
| Attenuation @ 1310nm | ≤0.36 dB/km |
| @ 1383nm | ≤0.35 dB/km |
| @ 1550nm | ≤0.22 dB/km |
| Dispersion @ 1288~1339nm | ≤3.5 ps/(nm.km) |
| @ 1271~1360nm | ≤5.3 ps/(nm.km) |
| @ 1550nm | ≤18.0 ps/(nm.km) |
| Zero dispersion wavelength | 1300 – 1324 nm |
| Zero dispersion slope | ≤ 0.092 ps/nm2×km |
| Cabled cut-off wavelength (lcc) | ≤1260 nm |
| Polarization Mode Dispersion | ≤0.2 ps/√km |
| 3) Mechanical Characteristics | |
| Proof stress level | 1.2 % (0.86 GPa) |
| Fiber curl (Fiber radius of curvature) | ≥4 m |
| Macro bending induced attenuation | 100 turns 30 mm radius ≤ 0.1 dB at 1550nm |
| 4) Refractive index | 1.466 @ 1310nm 1.467 @ 1550nm |
2. Fiber Optic Cable
2.1 GeneralDesign
The colorcoded fibers are housed in multiple color coded plastic loose tubes which arestranded around a central strength member utilizing Reverse Oscillating Lay(ROL).
Waterblocking yarn and water-blocking tape, filling the interstices within the core,provides protection against water ingress.MDPE sheath with 2 rip cords iscovered over the cable core.
2.2 Construction
| Item | Specification |
| Central strength member | FRP OD: 2.0mm(8,12,16,24,36 fibers) 2.3mm(48,72 fibers) 2.5mm(96 fiber) 3.0mm(144 fiber) |
| Loose tube | PBT OD: Nom.2.0mm(8,12,16,24,36 fibers) OD:Nom.2.2mm(48,72,96,144 fibers) Thickness:0.3mm |
| Filler | Plastic OD: 1.95mm(8,12,16,24,36 fibers) 2.15mm(48,72,96,144 fibers) |
| Rip-cord | 3 strands per pcs(Symmetrial distribution in the sheath) |
| Water-blocking tape | 20mm*0.25mm(8,12,16,24,36 fibers) 22mm*0.25mm(48,72 fibers) 28mm*0.25mm(96 fiber) 36mm*0.25mm(144 fiber) |
| Outer sheath | MDPE Thickness:2.0mm |
2.3 Loose Tube Stranding
| Fiber count | Max.fiber number per tube | Number of tube / Filler |
| 8/12 | 6 | 2 / 4 |
| 16 | 6 | 3 / 3 |
| 24 | 6 | 4 / 2 |
| 36 | 6 | 6 / 0 |
| 48 | 12 | 4 / 2 |
| 72 | 12 | 6 / 0 |
| 96 | 12 | 8 / 0 |
| 144 | 12 | 12 / 0 |
2.4 Cable Diameter and Weight
| Fiber count | Nom. diameter (mm) | Nom. weight (kg/km) |
| 8/12/16/24/36 | 10.5 | 82 |
| 48/72 | 11.2 | 94 |
| 96 | 12.6 | 119 |
| 144 | 15.4 | 179 |
2.5 Color Coding
Each fiberand tube shall be identifiable throughout the length of the cable in accordancewith the following color sequence. Fibercolor in each tube starts from No. 1 Blue.
| Fiber/Tube No | 1 | 2 | 3 | 4 | 5 | 6 |
| Color | Blue | Orange | Green | Brown | Gray | White |
| Fiber/Tube No | 7 | 8 | 9 | 10 | 11 | 12 |
| Color | Red | Black | Yellow | Red | Pink | Aqua |
2.6 Sheath Marking
The sheathmarking are hot stamped on the sheath at one meter interval with white color. Theaccuracy of the length marking shall be 0 ~ +1%.
Re-markingis yellow color, if necessary.
RUX *** xxFIBRE Month/Year XXXXM
RUX: Manufacturer’s Name
***: Customer’s name
xxFIBRE: Fiber count
Month/Year:Manufacture date
XXXXM: The figure ofmeter.
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