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Radiation Resistant Multi-mode Fibre(RRF)
In order to meet the special application requirements of optical fibre in the radiation
environment, YOFC has developed radiation resistant multi-mode fibres by adjusting
the glass composition of optical fibre and improving the process technology. Such fibres
feature fully optimized waveguide characteristics at the 850nm and 1300nm operating
wavelengths, as well as very low attenuation and high bandwidth.
Details
Specification
Documents
Applications
Product standards
- The YOFC radiation resistant multi-mode fibre meets or is superior to ITU-T.G651 and IEC60793-2-10 type A1a optical fibre specifications.
Characteristics
- Very stable loss in the radiation environment
- High bandwidth and low attenuation at 850 nm and 1,300 nm
- Excellent strip force stability and splicing performance
- Suitable for various cabling structures, favorable for tight/loose tubes
Product Process
- YOFC optical fibres are manufactured using the PCVD process. Due to a special glass composition and post-treatment process, these optical fibres exhibit excellent radiation resistance at the 850nm and 1,300nm operating wavelengths. The radiation resistant multi-mode fibre manufactured using the PCVD process features a precise refractive index profile, ensuring excellent geometric, attenuation, and bandwidth characteristics of the optical fibre.
Specifications
| Fibre type | RDG 50/125 | ||
|---|---|---|---|
| Part No. | RD2011-A | ||
| Optical properties | |||
| Attenuation @ 850/1300 nm (dB/km) | ≤2.5/≤1.0 | ||
| Bandwidth @ 850/1300 nm (MHz·km) | ≥500/≥500 | ||
| NA | 0.200±0.015 | ||
| Geometrical properties | |||
| Core diameter of optical fibre (μm) | 50.0±2.5 | ||
| Cladding diameter (μm) | 125.0±1.0 | ||
| Coating diameter (μm) | 245.0±10.0 | ||
| Core/cladding concentricity error (μm) | ≤1.5 | ||
| Core non-circularity (%) | ≤6 | ||
| Coating/cladding concentricity error (μm) | ≤12.0 | ||
| Cladding non-circularity (%) | ≤1.0 | ||
| Delivery length (km) | 1.1 ~ 8.8 | ||
| Material | |||
| Core material | F-doped glass | ||
| Cladding material | F-doped glass | ||
| Coating material | Dual-layer, UV-cured acrylate | ||
| Environmental properties | |||
| Intern | Wavelength(nm) | Condition | - |
| Temperature-humidity cycling induced attenuation (dB/km) | 8,501,300 | -10°C ~ 850°C, 98%RH | ≤0.2 |
| Temperature dependence induced attenuation (dB/km) | -60°C ~ 85°C | ≤0.2 | |
| Watersoak dependence induced attenuation (dB/km) | 23°C, 30 days | ≤0.2 | |
| Damp heat dependence induced attenuation (dB/km) | 85°C, 85% RH, 30 days | ≤0.2 | |
| Dry heat aging (dB/km) | 85°C, 30days | ≤0.2 | |
| Mechanical Properties | |||
| Proof test level (kpsi) | Off-line | ≥75 | |
| Coating strip force (N) | Average value | 1.0 ~ 5.0 | |
| Peak value | 1.3 ~ 8.9 | ||
| Dynamic fatigue parameter (nd ) | - | ≥20 | |
| Radiation resistance | |||
| Test according to TIA/EIA 455-64 (dB/100m) | Wavelength(nm) | Condition | - |
| 1300 | Induced attenuation under continuous radiation conditions with a total dose of 310 KGy and a dose rate of 750 Gy/s (at 25°C) |
≤2.5 | |
- Relative humidity "X1"% means that the humidity data at -10°C is uncontrollable.
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