PM Er-Doped Fiber is mainly used in 1.5 μm polarization maintaining optical amplifiers, LiDAR,and eye safety laser products.CJ Photonics PM Er-Doped Fiber has high birefringence and excellent polarization retention properties.This fiber has a high doping concentration,which can reduce the required pump power and fiber length,thereby reducing the impact of nonlinear effects.At the same time,optical fibers exhibit lower fusion losses and stronger bending resistance.The PM Er-doped fiber has good consistency based on the fiber fabrication process of C JPhotonics.
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● High birefringence characteristics |
●1.5μm polarization maintaining fiber laser |
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Type |
CJEDF-PM-7 |
CJEDF-PM-14 |
CJEDF-PM-30 |
CJEDF-PM-50 |
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Optical
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Cut-off Wavelength |
nm |
≤ 1300 |
≤ 1300 |
≤ 1300 |
≤ 1300 |
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Core NA |
- |
0.22 ± 0.02 |
0.22 ± 0.02 |
0.26 ± 0.02 |
0.26 ± 0.02 |
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Core Absorption@1530nm |
dB/m |
7.0 ± 2.0 |
14.0 ± 3.0 |
30.0 ± 3.0 |
50.0 ± 5.0 |
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Birefringence |
10-4 |
≥3.5 |
≥3.5 |
≥3.5 |
≥ 3.5 |
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Mode-field Diameter@1550nm |
µm |
5.5 ± 1.0 |
5.0 ± 1.0 |
5.0 ± 1.0 |
5.5 ± 1.0 |
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Geometrical&Mechanical |
Cladding Diameter |
µm |
125.0 ± 1.0 |
125.0 ± 1.0 |
125.0 ± 1.0 |
125.0 ± 1.0 |
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Coating Diameter |
µm |
245.0 ± 5.0 |
245.0 ± 5.0 |
245.0 ± 5.0 |
245.0 ± 5.0 |
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Core-Cladding Concentricity Error |
µm |
≤ 0.5 |
≤ 0.5 |
≤ 0.5 |
≤ 0.5 |
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Cladding Geometry |
- |
Circular, Panda Circle |
Circular, Panda Circle |
Circular, Panda Circle |
Circular, Panda Circle |
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Coating Material |
- |
high refractive index coating |
high refractive index coating |
high refractive index coating |
high refractive index coating |
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Matrix Material |
- |
silica |
silica |
silica |
silica |
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Proof Test |
kpsi |
≥ 100 |
≥ 100 |
≥ 100 |
≥ 100 |
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Product Features
Application Area