Double-cladding Ytterbium-doped Fiber (YDF)
Everfoton's Double-cladding Ytterbium Doped Fiber is an active optical fiber used in 1um fiber lasers. Lasers made with the fiber cavity can be widely used in material processing, medical care, and scientific research. Fiber lasers are widely used for their lightweight, high efficiency, and stability compared with traditional solidstate lasers.
The large preform process guarantees precgeometric control and batch stability
High ytterbium-doped concentration
High laser slope efficiency
Low photo-darkening
High reliability coating
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Applications
- CW / Pulse fiber laser
- Industry/ Medical
- High peak-power / High average-power fiber laser
Specifications
Specifications-1 (Low and Medium Power Pulse Series）
| Fiber Type | YDF_DC 10/125 |
YDF_DC 20/125 |
YDF_DC 23/130 | YDF_DC 25/250 |
YDF_DC 30/250 |
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| Part No. | YD1110-A | YD1110-B | YD1111-A | YD1110-D | YD1110-E | ||||
| Geometrical Properties | |||||||||
| Core Diameter (µm) | 10.0 ± 1.0 | 20.0 ± 1.5 | 23.0 ± 1.0 | 25.0 ± 2.5 | 30.0 ± 3.0 | ||||
| Cladding Diameter (flat-to-flat) (µm) | 125.0 ± 3.0 | 125.0 ± 3.0 | 130.0 ± 3.0 | 250.0 ± 10.0 | 250.0 ± 10.0 | ||||
| Coating Diameter (µm) | 245.0 ± 15.0 | 245.0 ± 15.0 | 245.0 ± 15.0 | 400.0 ± 20.0 | 400.0 ± 20.0 | ||||
| Inner Cladding Shape | Octagon | ||||||||
| Optical Properties | |||||||||
| Operating Wavelength (Yb3+) (nm) | 1030 ~ 1115 | ||||||||
| Cladding Attenuation @1200nm (dB/km) | ≤ 30 | ≤ 30 | ≤ 30 | ≤ 30 | ≤ 30 | ||||
| Cladding Pump Absorption@915nm (dB/m) | 1.7 ± 0.4 | 4.0 ± 0.5 | 4.1 ± 0.5 | 2.0 ± 0.4 | 2.0 ± 0.4 | ||||
| Core NA | 0.08 ± 0.01 | 0.08 ± 0.01 | 0.070 ± 0.005 | 0.065 ± 0.01 | 0.06 ± 0.01 | ||||
| Inner Cladding NA | ≥ 0.46 | ≥ 0.46 | ≥ 0.46 | ≥ 0.46 | ≥ 0.46 | ||||
| Proof Test (kpsi) | ≥ 100 | ≥ 100 | ≥ 100 | ≥ 100 | ≥ 100 | ||||
| Coating Material | Low Index Polymer | ||||||||
Specifications-2（High Power Pulse Series）
| Fiber Type | YDF_DC 100/400（A2） |
YDF_DC 100/400（A6） |
YDF_DC 200/360 | YDF_DC 300/540 |
YDF_DC 400/650 |
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| Part No. | YD1110-M | YD1110-N | YD1111-T | YD1110-O | YD1110-K | ||||
| Geometrical Properties | |||||||||
| Core Diameter (µm) | 10.0 ± 5.0 | 10.0 ± 5.0 | 200.0 ± 7.0 | 300.0 ± 6.0 | 400.0 ± 10.0 | ||||
| Cladding Diameter (flat-to-flat) (µm) | 400.0 ± 10.0 | 400.0 ± 10.0 | 360.0 ± 10.0 | 540.0 ± 10.0 | 650.0 ± 10.0 | ||||
| Coating Diameter (µm) | 550.0 ± 15.0 | 550.0 ± 15.0 | 525.0 ± 20.0 | 650.0 ± 20.0 | 800.0 ± 20.0 | ||||
| Inner Cladding Shape | Octagon | ||||||||
| Optical Properties | |||||||||
| Operating Wavelength (Yb3+) (nm) | 1030 ~ 1115 | ||||||||
| Cladding Attenuation @1200nm (dB/km) | ≤ 30 | ≤ 30 | ≤ 30 | ≤ 25 | ≤ 20 | ||||
| Cladding Pump Absorption@915nm (dB/m) | 2.0 ± 0.5 | 6.0 ± 1.0 | 1.1 ± 0.2 | 1.5 ± 0.5 | 3.0 ± 0.5 | ||||
| Core NA | 0.10 ± 0.01 | 0.10 ± 0.01 | 0.12 ± 0.01 | 0.12 ± 0.01 | 0.11 ± 0.01 | ||||
| Inner Cladding NA | ≥ 0.46 | ≥ 0.46 | ≥ 0.46 | ≥ 0.46 | ≥ 0.46 | ||||
| Proof Test (kpsi) | ≥ 100 | ≥ 100 | ≥ 100 | ≥ 100 | ≥ 100 | ||||
| Coating Material | Low Index Polymer | ||||||||
Specifications-3（Continuous Wave Series）
| Fiber Type | YDF_DC 14/250 |
YDF_DC 20/250 |
YDF_DC 20/400 |
YDF_DC 25/400 |
YDF_DC 30/400 |
YDF_DC 34/400 |
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| Part No. | YD1110-H | YD1110-L | YD1111-C | YD1110-J | YD1110-F | YD1110-F | ||||
| Geometrical Properties | ||||||||||
| Core Diameter (µm) | 14.0 ± 1.0 | 20.0 ± 2.0 | 20.0 ± 1.0 | 25.0 ± 2.0 | 30.0 ± 3.0 | 34.0 ± 2.0 | ||||
| Cladding Diameter (flat-to-flat) (µm) | 250.0 ± 5.0 | 250.0 ± 5.0 | 400.0 ± 10.0 | 400.0 ± 10.0 | 400.0 ± 10.0 | 400.0 ± 10.0 | ||||
| Coating Diameter (µm) | 400.0 ± 15.0 | 400.0 ± 15.0 | 550.0 ± 15.0 | 550.0 ± 15.0 | 550.0 ± 15.0 | 550.0 ± 15.0 | ||||
| Inner Cladding Shape | Octagon | |||||||||
| Optical Properties | ||||||||||
| Operating Wavelength (Yb3+) (nm) | 1030 ~ 1115 | |||||||||
| Cladding Attenuation @1200nm (dB/km) | ≤ 30 | ≤ 20 | ≤ 30 | ≤ 30 | ≤ 30 | ≤ 30 | ||||
| Cladding Pump Absorption@915nm (dB/m) | 0.7 ± 0.15 | 1.0 ± 0.2 | 0.4 ± 0.1 | 0.6 ± 0.1 | 0.6 ± 0.1 | 0.75 ± 0.25 | ||||
| Core NA | 0.070 ± 0.005 | 0.06 ± 0.01 | 0.06 ± 0.01 | 0.06 ± 0.01 | 0.06 ± 0.01 | 0.06 ± 0.01 | ||||
| Inner Cladding NA | ≥ 0.46 | ≥ 0.46 | ≥ 0.46 | ≥ 0.46 | ≥ 0.46 | ≥ 0.46 | ||||
| Proof Test (kpsi) | ≥ 100 | ≥ 100 | ≥ 100 | ≥ 100 | ≥ 100 | ≥ 100 | ||||
| Inner Coating Material | Low Index Polymer | |||||||||
Specifications-4（Continuous Wave Series）
| Fiber Type | YDF_DC 34/600 | YDF_DC 50/600 | YDF_DC 50/800 | ||||
| Part No. | YD1110-Q | YD1110-R | YD1111-S | ||||
| Geometrical Properties | |||||||
| Core Diameter (µm) | 34.0 ± 2.0 | 50.0 ± 3.0 | 50.0 ± 3.0 | ||||
| Cladding Diameter (flat-to-flat) (µm) | 600.0 ± 10.0 | 600.0 ± 10.0 | 800.0 ± 10.0 | ||||
| Coating Diameter (µm) | 750.0 ± 50.0 | 750.0 ± 50.0 | 970.0 ± 50.0 | ||||
| Inner Cladding Shape | Octagon | ||||||
| Optical Properties | |||||||
| Operating Wavelength (Yb3+) (nm) | 1030 ~ 1115 | ||||||
| Cladding Attenuation @1200nm (dB/km) | ≤ 30 | ≤ 30 | ≤ 30 | ||||
| Cladding Pump Absorption@915nm (dB/m) | 0.60 ± 0.10 | 0.80 ± 0.20 | 0.060 ± 0.10 | ||||
| Core NA | 0.065 ± 0.005 | 0.065 ± 0.005 | 0.065 ± 0.005 | ||||
| Inner Cladding NA | ≥ 0.46 | ≥ 0.46 | ≥ 0.46 | ||||
| Proof Test (kpsi) | ≥ 100 | ≥ 100 | ≥ 100 | ||||
| Inner Coating Material | Low Index Polymer | ||||||
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