Smart Product Number: PLMA-EYDF-25P/300-HE
25/300 Erbium/Ytterbium Co-doped LMA Double Clad Fibers
Nufern's Large Mode Area (LMA) and Polarization Maintaining LMA (PLMA) Er/Yb co-doped fiber features a unique low NA (0.09) core design, achieved without sacrificing high pump conversion efficiency and developed for applications where robustly single-mode output beam quality is critical. The high NA (0.46) cladding waveguide (250 and 300 μm) allows for efficient coupling of high pump powers, while the large core diameter (25 and 30 μm) maintains a large-mode field diameter and short device length thereby minimizing deleterious nonlinear effects such as SBS and SRS. The design of these LMA products has been finely tuned to achieve ultra-high efficiencies while suppressing parasitic effects at 1 μm, offering unmatched stability when operating at high powers. Utilizing the NuCOAT™ coating technology, these LMA fibers provide excellent preservation of beam quality and extended operating life at the high power levels demanded by today’s industrial fiber laser applications.
Optical Specifications
Operating Wavelength
1530 – 1625 nm
Core NA
0.090
First Cladding NA (5%) ≥ 0.46
Cladding Attenuation
≤ 30.0 dB/km @ 1095 nm
Cladding Absorption
2.90 ± 0.50 dB/m at 915 nm
Core Absorption
85.0 ± 15.0 dB/m near 1535 nm
Birefringence
nominal 1.5 × 10-4
Geometrical & Mechanical Specifications
Cladding Diameter
300.0 ± 8.0 µm
Core Diameter
25.0 ± 2.0 µm
Coating Diameter
450.0 ± 15.0 µm
Core/Clad Offset
≤ 2.00 μm
Coating Material
Low Index Acrylate
Prooftest Level
≥ 100 kpsi (0.7 GN/m²)
Comments
Coating Requirements: Low-index polymer coating.
Features & Benefits
• NuCOATFA fluoroacrylate coating — Greater fiber durability in extreme environmental operating & storage conditions
• Unique low NA Er/Yb co-doped core design — Few moded core, for robust SM beam quality
• Large-mode field diameter — Increased threshold for non-linearities
• Optimized, high efficiency core glass composition — Suitable for high power operation
• PANDA-style stress structure for increased birefringence — Superior optical performance anduniformity
• All fiber proof tested to > 100 kpsi — Critical for ensuring long term reliability when coiling
Typical Applications
• High power lasers and amplifiers emitting around 1.5 μm
• Single frequency systems
• Military and commercial LIDAR
• High peak power, pulsed fiber amplifiers
商品属性 [波长] 1530 - 1625 nm [掺杂类型] Er/Yb [芯径大小] 25 µm [首包层直径] 300 µm [数值孔径] 0.090 [光学包层] Double