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SM Stranded Loose Tube metallic Strength Member Armored Cable
1.1 General Design（metallic Strength Member Armored Cable）
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
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1) Construction
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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 |
Attenuation @ 1383nm | ≤0.35 dB/km |
Attenuation @ 1550nm | ≤0.22 dB/km |
Dispersion @ 1288~1339nm | ≤3.5 ps/(nm.km) |
Dispersion @ 1271~1360nm | ≤5.3 ps/(nm.km) |
Dispersion @ 1550nm | ≤18.0 ps/(nm.km) |
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Zero dispersion wavelength
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1300 – 1324 nm
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Zero dispersion slope
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≤ 0.092 ps/nm2×km
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Cabled cut-off wavelength (lcc)
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≤1260 nm
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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
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Item
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Specification
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Central strength member
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FRP OD: 2.0mm(8,12,16,24,36 fibers) 2.3mm(48,72 fibers) 2.5mm(96 fiber) 3.0mm(144 fiber) |
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Loose tube
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PBT OD: Nom.2.0mm(8,12,16,24,36 fibers) OD:Nom.2.2mm(48,72,96,144 fibers) Thickness:0.3mm |
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Filler
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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
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Fiber count
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Max.fiber number per tube
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Number of tube / Filler
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8/12
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6
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2 / 4
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16
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6
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3 / 3
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24 | 6 | 4 / 2 |
36 | 6 | 6 / 0 |
48 | 12 | 4 / 2 |
72 | 12 | 6 / 0 |
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96
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12
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8 / 0
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144 | 12 | 12 / 0 |
2.4 Cable Diameter and Weight
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Fiber count
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Nom. diameter (mm)
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Nom. weight (kg/km)
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8/12/16/24/36
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10.5
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82
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48/72
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11.2
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94
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96
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12.6
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119
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144 | 15.4 | 179 |
2.5 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.
***: Customer’s name
xxFIBRE: Fiber count
Month/Year:Manufacture date
XXXXM: The figure ofmeter.
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