Smart Product Number: LMA-YDF-25/400-VIII
25/400 Ytterbium-Doped LMA Double Clad Fibers
Nufern's 25/400 Ytterbium-doped double clad fiber is ideally suited for high average power pulsed and narrow linewidth CW fiber amplifier applications. Based on a "few-moded" waveguide structure, this fiber is incorporated into components and monolithic designs where maintaining beam quality can be more difficult. In addition to the standard active fiber, Nufern can supply a matching passive support fiber for component and pigtail development efforts. As with all Nufern standard Large Mode Area (LMA) fibers, these fibers are proof-tested to 100 kpsi, an industry requirement for long term reliability when coiling for mode filtering.
Optical Specifications
Operating Wavelength
1060 – 1115 nm
Core NA
0.060 ± 0.010
First Cladding NA (5%) ≥ 0.46
Cladding Attenuation
≤ 15.0 dB/km @ 1095 nm
Cladding Absorption
0.60 ± 0.10 dB/m at 915 nm
1.80 dB/m near 975 nm
Geometrical & Mechanical Specifications
Cladding Diameter (flat-to-flat) 400.0 ± 15.0 µm
Core Diameter
25.0 ± 1.5 µm
Coating Diameter
500.0 ± 20.0 µm
Core Non-Circularity
≤ 15 %
Coating Material
Low Index Acrylate
Prooftest Level
≥ 100 kpsi (0.7 GN/m²)
Comments
Coating Requirements: Low Index Polymer
商品属性 [波长] 1060 - 1115 nm [芯径大小] 25 µm [首包层直径] 400 µm [数值孔径] 0.060 [光学包层] Double [掺杂类型] Yb