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The single-mode core of this fiber is co-doped with erbium and 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 1540 to 1565 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 >0.20

Cladding Numerical Aperture

N/A >0.24 µm

Mode Field Diameter

N/A @ 1550 nm, 7 µm

Ytterbium Clad Absorption

N/A @ 915 nm, > 1.5 dB/m

Star Cladding Diameter

N/A 105 µm

Cladding Dimensions

N/A 125 µm

Coating Outer Diameter

N/A 250 µm

Mechanical and Testing Data

Proof Test Level

N/A 100 kpsi

Ordering Information

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 552HPWR065