Part #:
PM1950

EyeSafe Delivery Fiber

Nufern has specifically engineered a unique range of single-mode 2µm beam delivery fibers for the long wavelength EyeSafe window from 1850-2200nm, available in both PM and non-PM versions.  By applying our extensive fiber manufacturing expertise, gained in the demanding telecommunications industry, this family of fibers has excellent uniformity and high fatigue failure resistance. These fibers are aimed at emerging fiber applications for the 2µm wavelength, including medical, military/aerospace and industrial fiber laser markets.

Applications
  • Pigtailing 2µm components
  • Tm-fiber lasers/amplifiers
  • 2µm beam delivery
Features & Benefits
  • Optimized for 2µm wavelengths - Higher performance
  • Low bend loss at 2µm - Tighter packaging
  • Tight tolerances - High yield

Optical Specifications

Operating Wavelength1850–2200 nm
Mode Field Diameter8.0 µm @ 1950 nm (nominal)
Second Mode Cut-Off1720 ± 80 nm
Beat Length (nominal)5.2 mm @ 1950 nm
Core Numerical Aperture (nominal)0.20
Birefringence (nominal) 3.5 x 10-4

Geometrical & Mechanical Specifications

Core Diameter (nominal)7.0 µm
Clad Diameter125.0 ± 1.0 µm
Coating Diameter245 ± 15 µm
Core-Clad Concentricity≤ 5.0 µm
Core/Clad Offset≤ 0.5 µm
Coating MaterialUV Cured, Dual Acrylate
Operating Temperature-40 to +85 °C
Proof Test Level≥ 100 kpsi (0.7 GN/m²)

RoHS Compliant