The single-mode core of this polarization-maintaining fiber is doped with ytterbium. It is then surrounded by a silica cladding and covered with a low-index protective coating. The resulting double-clad fiber is used for single-mode fiber lasers and amplifiers operating in the 1040 to 1200 nm range.

The fiber enables fiber lasers and amplifiers with good beam profile characteristics, high wall plug efficiencies, compact footprints, superior reliability, and maintenance-free operation. It also accommodates high energies during pulsed operation and at high repetition rates.
Unit of Measure


Core Numerical Aperture

N/A 0.12

Cutoff Wavelength

N/A < 1040 nm

Mode Field Diameter

N/A @ 1060 nm, 6 µm

Ytterbium Clad Absorption

N/A @ 915 nm, > 0.5 dB/m

Beat Length

N/A @ 1060 nm, < 4.0 mm@ 1550 nm, < 6.0 mm

Circular Cladding Diameter

N/A 200 µm

Coating Outer Diameter

N/A 300 µm

Mechanical and Testing Data

Proof Test Level

N/A 100 kpsi0.689 GPa

How To Order:

Order From Location

+45 43 45 8888
Priorparken 611,
DK-2605 Broendby,

Order By Item #

N/A 552 HPWR 003

Typical Applications

N/A Fiber Amplifiers Fiber Lasers High-Energy Pulsed Operation


N/A Also specify fiber length in meters.