Single-mode
Single-mode fiber uses to transmit over longer distances. It is a single glass fiber strand used to transmit a single ray of light.
Single-mode fiber features only one transmission mode. Compared with multi-mode fiber, it can carry higher bandwidths; however, it needs to have a light source having a narrow spectral width.
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- Specifications
Optical Characteristics G652D G657 Attenuation @1310 nm ≤0.35 dB/KM ≤0.35 dB/KM @1383 nm ≤0.35 dB/KM (After H2 aging) ≤0.35 dB/KM (After H2 aging) @1550 nm ≤0.22 dB/KM ≤0.21dB/KM @1625 nm ≤0.24 dB/KM ≤0.23 dB/KM Attenuation vs.Wavelength @1310 nm 1285~1330 nm ≤0.03 dB/KM ≤0.03 dB/KM @1550 nm 1525~1375 nm ≤0.02 dB/KM ≤0.02 dB/KM Dispersion Coefficient 1530~1565 nm – – 1565~1625 nm – – 1285~1340 nm -3.0~3.0 ps/(nm.km) – @1550 nm ≤18 ps/(nm.km) ≤18 ps/(nm.km) @1625 nm ≤22 ps/(nm.km) ≤22 ps/(nm.km) Zero Dispersion Wavelength 1302~1322 nm.km 1300~1324 nm.km Zero Dispersion Slope ≤0.090 ps/(nm².km) ≤0.092 ps/(nm².km) Zero Dispersion Slope (Typical) ≤0.086 ps/(nm².km) – Polarization Mode Dispersion Maximum Individual Fiber ≤0.2 ps/√km ≤0.2 ps/√km Design Link (Value M=20.0=0.01%) ≤0.1 ps/√km ≤0.1 ps/√km Cable Cut-off Wavelength ≤1260 nm ≤1260 nm Mode Field Diameter @1310 nm 9.2±0.4 µm 8.8±0.4 µm @1550 nm 10.4±0.5 µm 9.8±0.5 µm Group Index of Refraction @1310 nm 1.466 1.466 (Typical) @1550 nm 1.467 1.467 Geometrical Characteristics Cladding Diameter 124.8±0.7 µm 124.8±0.7 µm Cladding Non-Circularity ≤0.7% ≤0.7% Coating Diameter 245±5 µm 245±5 µm Coating/Cladding Concentricity Error ≤12.0 µm ≤12.0 µm Coating Non-Circularity ≤6.0% ≤6.0% Core/Cladding Concentricity Error ≤0.5 µm ≤0.5 µm Curl (Radius) ≥4 m ≥4 m Environmental Characteristics (@1310 nm/@1550 nm) Attenuation at Temperature cycling △ α (-60°C~+85°C) ≤0.05 dB/km ≤0.05 dB/km Attenuation at Temperature-Humidity Cycling (-10°C~+85°C, 98% R.H.) ≤0.05 dB/km ≤0.05 dB/km Attenuation at Damp Heat Dependence (85°C, 98% R.H., 30 days) ≤0.05 dB/km ≤0.05 dB/km Attenuation at Watersoak Dependence (23°C, 30 days) ≤0.05 dB/km ≤0.05 dB/km Mechanical Characteristics Proof Test (Off Line) ≥9.0 N (≥100 kpsi) ≥9.0 N (≥100 kpsi) Attention at Bending 1 Turn, 7.5 mm Radius – ≤0.5 dB Dependence 1Turn, 10 mm Radius – ≤0.1 dB 1Turn, 15 mm Radius – ≤0.03 dB 1Turn, 25 mm Radius ≤0.05 dB – Coating Strip Force (Typical) 1.7 N 1.7 N Dynamics Stress Corrosion Susceptibility Parameter (Nd, Typical) ≥20 ≥20
