IXFiber EYDF-1500 Series Erbium/Ytterbium Co-Doped Double-Clad Active Fiber
| Brand | IXFiber |
|---|---|
| Origin | France |
| Product Type | Rare-Earth-Doped Double-Clad Active Fiber |
| Core NA | ≤ 0.12 |
| Cladding NA | 0.46 |
| Core Diameter | ~10–12 µm (single-mode at 1550 nm) |
| Cladding Shape | Octagonal (non-PM) / Circular (PM Panda-type) |
| Beat Length (PM) | < 2 mm |
| Background Loss (1550 nm) | < 50 dB/km |
| Power Conversion Efficiency (976 nm pump → 1550 nm signal) | > 40% |
| Proof Test Strength | 50 kpsi |
| Operating Wavelength Range | 1530–1565 nm (lasing/amplification) |
Overview
The IXFiber EYDF-1500 Series is a high-performance, double-clad erbium/ytterbium co-doped active fiber engineered for high-power, single-mode fiber lasers and amplifiers operating in the C-band (1530–1565 nm). Leveraging Yb³⁺ as a sensitizer and Er³⁺ as the primary lasing ion, this fiber enables efficient energy transfer via resonant pump absorption at 915 nm or 976 nm—where Yb³⁺ exhibits strong absorption—and subsequent non-radiative transfer to Er³⁺, resulting in stimulated emission near 1550 nm. Its optimized core composition, low background loss (< 50 dB/km at 1550 nm), and precisely controlled refractive index profile ensure high gain efficiency, excellent beam quality, and thermal stability under multi-watt pump conditions. Designed and manufactured in France under stringent ISO 9001-certified processes, the EYDF-1500 meets the demanding requirements of industrial, scientific, and defense-grade fiber laser systems requiring robustness, long-term reliability, and reproducible performance.
Key Features
- High power conversion efficiency (> 40% at 976 nm pumping into 1550 nm output) enabled by optimized Er/Yb concentration ratio and minimized quenching effects
- Single-mode core with nominal diameter of 10–12 µm and numerical aperture ≤ 0.12, supporting diffraction-limited beam propagation at 1550 nm
- Large octagonal or circular double cladding (NA = 0.46) for efficient multimode pump coupling and uniform absorption along fiber length
- Ultra-low background attenuation (< 50 dB/km at 1550 nm), minimizing parasitic losses and enabling longer gain lengths without signal degradation
- Available in both standard (non-polarization-maintaining) and PM variants with panda-type stress rods; beat length 5 × 10⁻⁵
- Proof-tested to 50 kpsi, ensuring mechanical reliability during coil winding, splicing, and high-thermal-load operation
- Consistent dopant distribution and core/cladding geometry across production batches—critical for scalable laser module manufacturing
Sample Compatibility & Compliance
The EYDF-1500 is compatible with standard fusion splicing platforms (e.g., Vytran, AFL) and high-precision cleavers used in fiber laser assembly lines. It integrates seamlessly with pump combiners (6+1×1, 7+1×1), fiber Bragg gratings (FBGs), and mode-field adapters designed for C-band systems. All fibers comply with IEC 60793-2-50 (category A4a for rare-earth-doped fibers) and meet RoHS Directive 2011/65/EU for hazardous substance restrictions. Batch traceability, spectral absorption/emission data, and macrobend loss characterization reports are supplied per ITU-T G.652.D and Telcordia GR-1073-CORE specifications. For regulated environments—including medical laser OEMs and aerospace subsystem suppliers—the fiber supports full documentation packages aligned with ISO 13485 and AS9100 audit requirements.
Software & Data Management
While the EYDF-1500 is a passive optical component, its integration into laser systems benefits from IXFiber’s proprietary modeling toolkit, available under NDA to qualified system integrators. This MATLAB- and Python-compatible library includes core dispersion profiles, amplified spontaneous emission (ASE) spectra prediction, and rate-equation-based gain saturation models calibrated against experimental data from 100+ test configurations. Raw spectral measurements (absorption cross-sections from 800–1100 nm; emission cross-sections from 1450–1650 nm) are provided in HDF5 format with metadata compliant with FAIR (Findable, Accessible, Interoperable, Reusable) principles. Traceability logs include lot-specific photodarkening acceleration test results (per IEC 61280-2-9), supporting lifetime modeling under continuous-wave and pulsed operation.
Applications
- High-power (>10 W) single-frequency C-band fiber lasers for coherent LIDAR and metrology
- Erbium-doped fiber amplifiers (EDFAs) in dense wavelength division multiplexing (DWDM) networks requiring >30 dB small-signal gain
- MOPA (Master Oscillator Power Amplifier) architectures for ultrashort pulse amplification with minimal nonlinear distortion
- Space-qualified optical sources where radiation-hardened gain fiber performance must be validated per ECSS-Q-ST-70-08C
- Research-grade tunable lasers spanning 1530–1565 nm using intracavity filtering and polarization control
- Medical laser systems compliant with IEC 60601-2-22 for dermatology and ophthalmology applications
FAQ
What pump wavelengths are optimal for the EYDF-1500 fiber?
976 nm offers highest absorption cross-section and best power conversion efficiency; 915 nm provides broader thermal tolerance and reduced photodarkening risk.
Is the fiber suitable for Q-switched operation?
Yes—its high Er³⁺/Yb³⁺ ratio and low clustering support nanosecond pulse generation with peak powers exceeding 10 kW when paired with appropriate cavity design.
Can it be spliced directly to passive SMF-28 fiber?
Yes, using optimized fusion parameters (low arc power, extended pre-fuse time); mode-field adapter splices achieve < 0.15 dB loss at 1550 nm.
Does IXFiber provide custom coating options?
Standard acrylate coating is rated for 85 °C continuous operation; polyimide and carbon-coated variants are available for >200 °C environments upon request.
How is photodarkening performance characterized?
Each production lot undergoes accelerated aging at 500 mW/cm² 976 nm fluence for 1000 hours; spectral transmission drift at 1550 nm is reported with uncertainty < ±0.02 dB/km.
