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Radiation Resistant Multi-mode Fibre (RRF)
To meet the special application requirements of the optical fibre in the radiation environment, the multi-mode fibre with radiation resistance is developed by adjusting the optical fibre components and improving the process technology. This fibre has graded refractive index profile, which fully optimizes the waveguide characteristics of 850nm & 1300nm operation wavelength, and has very low attenuation and high
bandwidth. YOFC radiation resistant multi-mode series fibres have 50μm core, Besides, YOFC also can make customized tight-buffered radiation resistant multi-mode fibre.
Details
Specification
Documents
Applications
Product standards
• YOFC radiation resistant fibre complies with orexceeds ITU-T.G651 & IEC 60793-2-10 A1a fibre specification.
Product process
• The fibre is produced by plasma activated chemical vapor deposition (PCVD) process. the radiation resistant multi mode fibre fabricated by PCVD process has excellent radiation resistant properties at 850nm& 1300nm based on its special glass components and manufacturing proces
• Due to the accurate control of deposition of PCVD process, YOFC radiation resistant multi-mode fibre has perfect waveguide refractive index profile, which guarantees the excellent geometrical, attenuation and bandwidth characteristics
Characteristics
• Stable transmission property under radiation environment
• High bandwidth and low attenuation @ 850nm & 1300nm
• Good stripping and welding Properties
• Suitable for various cable structures and favorable for tight/loose tubes
Specifications
|
Fibre Type |
RDG 50/125 |
|
|---|---|---|
|
Part No. |
RD2011-A |
|
|
Optical Properties |
||
|
Attenuation@850/1300nm(dB/km) |
2.5/1.0 |
|
|
Bandwidth@850/1300nm(MHz·km) |
300/300 |
|
|
Numerical Aperture |
0.2± 0.015 |
|
|
Geometrical Properties |
||
|
Core Diameter(μm) |
50 ±2.5 |
|
|
Cladding Diameter(μm) |
125 ±1 |
|
|
Coating Diameter(μm) |
245 ±10 |
|
|
Core/Cladding Concentricity(μm) |
≤1 |
|
|
Core Non-circularity(%) |
≤3 |
|
|
Coating/Clad Concentricity(μm) |
≤10 |
|
|
Cladding Non-Circularity(%) |
≤0.7 |
|
|
Spool Length(km) |
1.1～8.8 |
|
|
Material Composition |
||
|
Core Material |
F Doped Silica Glass |
|
|
Cladding Material |
Pure Silica Glass |
|
|
Coating Material |
Dual-layer UV-Acrylate |
|
|
Environmental Properties |
||
|
Temperature Induced Loss(dB/km) |
≤0.2 |
|
|
Temperature-humidity Cycling Induced Attenuation(dB/km) |
≤0.2 |
|
|
Watersoak Dependence Induced Attenuation (dB/km) |
≤0.2 |
|
|
Damp Heat Dependence Induced Attenuation(dB/km) |
≤0.2 |
|
|
Dry Heat Aging (dB/km) |
≤0.2 |
|
|
Mechanical Properties |
||
|
Proof Test Level(kpsi) |
≥75 |
|
|
Strip Force(N) |
1.2 |
|
|
≥1.2 ≤8.9 |
||
|
Dynamic Stress Corrosion Susceptibility Parameter nd |
≥24 |
|
|
Radiation-resistance Characteristcics |
||
|
According to TIA/EIA 455-64（dB/km） |
Total dose :250kGy，dose rate: 1Gy/s（25°C）， induced attenuation@1310nm |
≤15 |
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