Smart Product Number: PLMA-YDF-20/400-M+
20/400 Ultra Matched Yb-doped LMA Double Clad Fiber
Nufern's Ultra Matched (M+) Large Mode Area (LMA) active double clad fibers are ideal for high power fiber lasers and amplifiers used in defense, industrial, and medical applications. These fibers feature a 20 micron diameter core and 400 micron diameter clad size with a low NA (0.065) core. These M+ fibers represent the next generation of matched fibers. They are matched with ultra-high precision to their passive 20/400 LMA M+ counterparts to ensure excellent splice compatibility and low loss. As with all Nufern standard LMA fibers, these fibers are proof tested to 100 kpsi, an industry requirement for long term reliability. The M+ fibers are specified to the tightest specifications including the MFD, and use NuCOATFA coating technology ensuring excellent preservation of beam quality and extending operating life at the high power levels demanded by today’s industrial fiber laser applications. These ultra matched fibers are available in non-PM (LMA) and PM (PLMA) versions.
Optical Specifications
Operating Wavelength
1015 – 1115 nm
Core NA
0.065 ± 0.005
First Cladding NA (5%) ≥ 0.46
Mode Field Diameter
16.70 ± 1.00 µm @ 1060 nm
Core Attenuation
≤ 30.0 dB/km @ 1300 nm
≤ 15.0 dB/km @ 1200 nmCladding Attenuation
≤ 15.0 dB/km @ 1095 nm
Cladding Absorption
1.5 dB/m at 975 nm
0.5 ± 0.1 dB/m at 915 nmBirefringence
nominal 4 × 10-4
Slope Efficiency
> 70.0% @ 915 nm
Geometrical & Mechanical Specifications
Cladding Diameter
405.0 ± 7.0 µm
Core Diameter
20.0 ± 1.5 µm
Coating Diameter
550.0 ± 15.0 µm
Core/Clad Offset
≤ 1.20 μm
Prooftest Level
≥ 100 kpsi (0.7 GN/m²)
Comments
Coating Requirements: Low Index Polymer NuCOAT-FA.
The ultra matched passive fibers are also available.
Features & Benefits
Ultra Matched (M+) — Providing the lowest possible splice loss
NuCOATFA fluoroacrylate coating — Greater fiber durability in extreme operating & storage conditions
State of the art Yb-doped glass — Useful for generating high powers
PANDA-style stress structure for increased birefringence — Superior optical performance and uniformity
All fiber proof tested to > 100 kpsi — Critical for ensuring long term reliability when coiling
Typical Applications
Monolithic high power lasers & amplifiers
Material processing
Non-linear optics/frequency doubling
Defense, industrial and medical
商品属性 [波长] 1015 - 1115 nm [掺杂类型] yb [芯径大小] 20 µm [首包层直径] 405 µm [数值孔径] 0.065 [光学包层] Double