Multi-mode
Multi-mode optical fiber is a type of optical fiber that usually implemented for communication over short distances to make networks in buildings or premises. Typical multi-mode links have data rates of 10 Mbit/s to 10 Gbit/s over link lengths of up to 600 meters (2000 feet). Multi-mode fiber has a large core diameter that allows multiple light modes to be propagated and limits the maximum length of a transmission link because of modal dispersion.
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- Specification
Optical Characteristics OM1 OM2 OM3 OM4 Attenuation @ 850 nm ≤3.0 dB/KM ≤3.0 dB/KM ≤2.8 dB/KM ≤2.8 dB/KM @1300 nm ≤0.8 dB/KM ≤0.8 dB/KM ≤0.7 dB/KM ≤0.7 dB/KM Bandwidth @ 850 nm ≥200 Mhz.KM ≥500 Mhz.KM ≥1500 MHz.KM@LED ≥3500 MHz.KM@LED ≥2000 MHz.KM@laser ≥4700 MHz.KM@laser @1300 nm ≥500 Mhz.KM ≥500 Mhz.KM ≥500 Mhz.KM ≥500 Mhz.KM 10Gb/s Ethernet Link @ 850 nm 33 M 82 M 300 M 300 M Distance (10GBASE-SR) Zero Dispersion Wavelength 1320~1365 nm 1295~1320 nm 1295~1320 nm 1295~1320 nm Group Index of Refraction @850 nm 1.496 1.482 1.482 1.482 (Typical) @1300 nm 1.491 1.477 1.477 1.477 Geometrical Characteristics Core Diameter 62.5±2.5 µm 50±2.5 µm 50±2.5 µm 50±2.5 µm Cladding Diameter 124.8±1.0 µm 124.8±1.0 µm 124.8±1.0 µm 124.8±1.0 µm Cladding Non-Circularity ≤1.0% ≤1.0% ≤1.0% ≤1.0% Coating Diameter 245±7 µm 245±7 µm 245±7 µm 245±7 µm Coating/Cladding Concentricity Error ≤12.0 µm ≤12.0 µm ≤12.0 µm ≤12.0 µm Coating Non-Circularity ≤6.0% ≤6.0% ≤6.0% ≤6.0% Core/Cladding Concentricity Error ≤1.5 µm ≤1.5 µm ≤1.0 µm ≤1.0 µm Environmental Characteristics (@850 nm/@1300 nm) Attenuation at Temperature cycling ≤0.10 dB/km ≤0.10 dB/km ≤0.10 dB/km ≤0.10 dB/km △ α (-60°C~+85°C) Attenuation at Temperature-Humidity Cycling ≤0.10 dB/km ≤0.10 dB/km ≤0.10 dB/km ≤0.10 dB/km (-10°C~+85°C, 98% R.H.) Attenuation at Damp Heat Dependence ≤0.10 dB/km ≤0.10 dB/km ≤0.10 dB/km ≤0.10 dB/km (85°C, 98% R.H., 30 days) Attenuation at Watersoak Dependence ≤0.10 dB/km ≤0.10 dB/km ≤0.10 dB/km ≤0.10 dB/km (23°C, 30 days) Mechanical Characteristics Proof Test (Off Line) ≥9.0 N (≥100 kpsi) ≥9.0 N (≥100 kpsi) ≥9.0 N (≥100 kpsi) ≥9.0 N (≥100 kpsi) Macrobend Loss 850 nm ≤0.05 dB ≤0.05 dB ≤0.05 dB ≤0.05 dB (100 Turn, 25mm Radius) 1300 nm ≤0.05 dB ≤0.05 dB ≤0.05 dB ≤0.05 dB Coating Strip Force (Typical) 1.5 N 1.5 N 1.5 N 1.5 N Dynamics Stress Corrosion ≥27 ≥27 ≥27 ≥27 Susceptibility Parameter(Nd, Typical)
