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

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 125 µm

Coating Outer Diameter

N/A 250 µm

Mechanical and Testing Data

Proof Test Level

N/A 100 kpsi0.689 GPa

How To Order:

Order From Location

1.888.342.3743 toll-free in the United States and Canada
1.770.798.5555 from outside the U.S.A.
25 Schoolhouse Road
Somerset, NJ 08873, USA

Order By Item #

N/A 552 HPWR 004

Typical Applications

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


N/A Also specify fiber length in meters.