Products > Fibers > LIEKKI™ High-Power Fibers > LIEKKI™ Ytterbium Fibers
LIEKKI™ YB1200-4/125
LIEKKI™ Yb1200-4/125 fibers are highly doped single mode ytterbium fibers for low-noise, low-nonlinearity preamplifiers and lasers. Their telcom-like geometry makes them compatible with low-cost pump diodes and standard single mode passive fibers. They make an excellent preamplifier in a fiber amplifier chain with double cladding fiber acting as power amplifier.
- Very short application lengths
- Low nonlinear effects
- Low photodarkening
- Telcom-like geometry
- Good spliceability to HI1060 single mode fiber
- Telcom grade dual layer UV-cured acrylate coating
- Low-power, low-noise preamplifiers
- ASE sources
- CW and pulsed lasers and amplifiers
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| | LIEKKI™ Yb1200-4/125 | | Optical | | Mode field diameter at 1060 nm | µm | 4.4 ± 0.8 | | Peak core absorption at 976 nm (nominal) | dB/m | (1200) | | Core absorption at 920 nm | dB/m | (280) | | Core numerical aperture (nominal) | | (0.2) | | Cut-off wavelength | | 1010 ± 70 | | Geometrical and mechanical | | Core concentricity error | µm | < 0.7 | | Cladding diameter | µm | 125 ± 2 | | Cladding geometry | | Round | | Coating diameter | µm | 245 ± 15 | | Coating material | | High index acrylate | | Cladding numerical aperture | | > 0.46 | | Proof test | kpsi | > 100 | |
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