Smart Product Number: PLMA-EYDF-20P/250-XPH
20P/250 Erbium/Ytterbium-Doped LMA Double Clad PM Fiber
Coherent | Nufern's proprietary rare earth doping technology is used to deliver Er/Yb co-doped fibers with industry leading performance and reliability. This fiber feature a 20 micron diameter core and a 250 micron diameter cladding with a 0.09 NA. The fiber design has been finely optimized to deliver the best performance. PLMA-EYDF-20P/250-XPH is optimized to achieve tens of Watts of output power with high efficiency and suppressed 1 µm parasitic ASE, offering unmatched stability. The large core of the fiber allows for shorter fiber lengths in amplifier and laser systems to reduce the impact of non-linear effects. The fiber utilizes the latest fiber design and NuCOAT-FA coating technology to ensure excellent preservation of beam quality and extended operating light at the high power levels demanded by today's industrial fiber laser applications.
Optical Specifications
Operating Wavelength
1530 – 1625 nm
Core NA
0.090 ± 0.010
First Cladding NA (5%) ≥ 0.46
Cladding Attenuation
≤ 30.0 dB/km @ 1095 nm
Cladding Absorption
3.70 ± 0.60 dB/m at 915 nm
Core Absorption
90.0 ± 20.0 dB/m near 1535 nm
Birefringence
nominal 1.5 × 10-4
Geometrical & Mechanical Specifications
Cladding Diameter
250.0 ± 5.0 µm
Core Diameter
20.0 ± 2.0 µm
Coating Diameter
350.0 ± 10.0 µm
Core/Clad Offset
≤ 2.50 μm
Clad Non-Circularity
≤ 2.0 %
Coating Material
Low Index Acrylate
Prooftest Level
≥ 100 kpsi (0.7 GN/m²)
Features & Benefits
Optimized XPH design — High efficiency and low parasitic 1 µm ASE
Large core — Enables shorter fiber length for high-power pulsed amplifiers
Double clad design — High power performance and high power conversion efficiency
NuCOAT-FA fluoroacrylate coating — Greater fiber durability in extreme operating and storage conditions
All fiber proof tested to > 100 kpsi — Critical for ensuring long term reliability when coiling
Typical Applications
Laser and amplifiers
Military and commercial LIDAR
High peak power, pulsed fiber amplifiers
商品属性 [波长] 1530 - 1625 nm [掺杂类型] Er [芯径大小] 20 µm [首包层直径] 250 µm [数值孔径] 0.090 [光学包层] Double