Product Overview
Built on a radiation-tolerant pure-silica core design with optimized dopant profiles, the Er-5/125-R fiber exhibits exceptionally low radiation-induced attenuation (RIA) even after prolonged exposure to high-dose gamma rays (>100 kGy) and neutron flux. Its robust structure suppresses color center formation, maintaining signal integrity and mechanical reliability where conventional fibers would rapidly degrade.
The fiber complies with stringent aerospace and nuclear industry standards for long-term stability under thermal cycling (-65°C to +125°C), vibration, and mechanical stress. With standard 125 μm cladding and dual acrylate coating, it remains fully compatible with commercial fusion splicers, connectors, and cabling processes—enabling seamless integration into existing photonic architectures without compromising radiation resilience.
Technical Specifications
| Brand Name | Winner |
| Model Number | Er-5/125-R |
| Fiber Type | Radiation-Hardened Single-Mode Fiber (Pure-Silica Core) |
| Operating Wavelength | 1260–1625 nm (optimized for 1310/1550 nm) |
| Cladding Diameter | 125 ± 1 μm |
| Coating Diameter | 245 ± 10 μm |
| Radiation Resistance | Tested up to 100 kGy (gamma), minimal RIA at 1550 nm |
| Attenuation @1550 nm | ≤0.45 dB/km (pre-irradiation); stable post-exposure |
| Proof Tension | ≥100 kpsi |
| Key Performance | Ultra-low radiation-induced attenuation (RIA)
High mechanical strength for launch and in-reactor deployment
Excellent thermal stability across wide temperature range
Compatible with standard G.652.D splicing and termination |
Applications
- In-core and ex-core radiation/temperature sensing in nuclear power plants
- Real-time dosimetry and health monitoring of reactor structural components
- Inter-satellite and intra-satellite data links in LEO, MEO, and GEO orbits
- Optical feedthroughs for particle accelerators and fusion research facilities
- Space telescope instrumentation requiring radiation-immune signal transmission
Handling & Integration
Supplied as bare fiber on radiation-clean spools. For optimal performance in high-radiation zones, avoid tight bends (<15 mm radius) and ensure hermetic or hydrogen-free packaging to prevent synergistic degradation effects. The fiber’s standard geometry allows direct replacement of conventional SMF in radiation-prone segments of optical networks.
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