Cladding-pumped erbium-ytterbium fiber for high-power 1545–1600 nm lasers and amplifiers — single transverse mode, efficiently pumped with standard MM diodes.
Erbium-Ytterbium codoped fiber EYDF-DC-7/125 series is specially designed for typical application for lasers and amplifiers for highly efficient pumping with MM pump sources at 915 ÷ 970nm and generation in the range 1545-1600nm.
FIBER SPECIFICATIONS;EYDF-DC-7/125
Core diameter, µm; 5.6 ± 0.6
Coating diameter, µm; 230 ± 35
Coating material type; Silicon rubber with a reduced refractive index, covered with a protective varnish on top
MFD @ 1550nm, µm; 6.0 ± 0.6
Clad shape; Octagonal, 123±3 um flat to flat
Core NA; 0.2 ± 0.03
Mode of operation; one transverse mode TEM00
Cutoff wavelength second mode, µm; 1520 ± 50
Clad NA; 0.45 ± 0.02
Typical clad absorption (940 nm), dB/m; >1.0
Clad absorption (975 nm), dB/m; > 2
Effective pumping range, µm; 0.915 ÷ 0.970
Typical splicing loss with SMF28, dB; ~ 0.2
The fiber has been tested in a laser at a power of up to 5 watts at 1568 nm The fiber is compatible when splicing with FLEX1060 and SMF28e fibers The typical length for a 915-940 nm pumped laser is 10-14 m