Products > Fibers > LIEKKI™ High-Power Fibers
LIEKKI™ PASSIVE FIBERS
nLIGHT’s passive LIEKKI™ fibers are especially designed and manufactured to match commercially available active fibers. The core diameters and numerical apertures are perfectly matched to the active fibers to ensure that excellent beam quality is maintained throughout the system.
Our LIEKKI™ passive fibers are available in single cladding, double cladding (DC), single cladding polarization maintaining (PM) and double cladding polarization maintaining configuration. Many of the fibers are also available as a Photosensitive variant for Fiber Bragg Grating manufacturing. Please contact sales representative for the availability.
- Round cladding for easy cleaving, splicing and handling
- Single cladding fibers feature a dual coated acrylate coating
- Double cladding fibers feature a low-index fluoroacrylate coating with > 0.46 NA
- Matching with industry standard active fiber geometries 125 μm
- Glass cladding diameter is designed to "fit-in" octagonal active fibers
- Low signal and pump coupling losses from passive to active fiber
- Pigtails for fiber lasers and amplifiers
- All-fiber subassemblies
- High-brightness power delivery
- Fiber-based components for fiber lasers (e.g. pump combiners)
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| | Core | ± | Cladding | ± | Coating | ± | NA | ± | | Passive-6/125* | 6.0 | 0.5 | 125 | 2 | 245 | 15 | 0.15 | 0.01 | | Passive-6/125DC* | 6.0 | 0.5 | 125 | 2 | 245 | 15 | 0.15 | 0.01 | | Passive-6/125DC-PM* | 6.0 | 0.5 | 125 | 2 | 245 | 15 | 0.15 | 0.01 | | Passive-10/125 | 10 | 1 | 125 | 2 | 245 | 15 | 0.08 | 0.01 | | Passive-10/125DC | 10 | 1 | 125 | 2 | 245 | 15 | 0.08 | 0.01 | | Passive-10/125-PM | 10 | 1 | 125 | 2 | 245 | 15 | 0.08 | 0.01 | | Passive-10/125DC-PM | 10 | 1 | 125 | 2 | 245 | 15 | 0.08 | 0.01 | | Passive-12/125 | 12.5 | 1 | 125 | 2 | 245 | 15 | 0.08 | 0.01 | | Passive-12/125DC | 12.5 | 1 | 125 | 2 | 245 | 15 | 0.08 | 0.01 | | Passive-12/125DC-PM | 12.5 | 1 | 125 | 2 | 245 | 15 | 0.08 | 0.01 | | Passive-12/125-PM | 12.5 | 1 | 125 | 2 | 245 | 15 | 0.08 | 0.01 | | Passive-20/125 | 20 | 2 | 125 | 2 | 245 | 15 | 0.08 | 0.01 | | Passive-20/125DC | 20 | 2 | 125 | 2 | 245 | 15 | 0.08 | 0.01 | | Passive-20/125-PM | 20 | 2 | 125 | 2 | 245 | 15 | 0.08 | 0.01 | | Passive-20/125DC-PM | 20 | 2 | 125 | 2 | 245 | 15 | 0.08 | 0.01 | | Passive-20/400 | 20 | 2 | 400 | 8 | 500 | 15 | 0.07 | 0.01 | | Passive-20/400DC | 20 | 2 | 400 | 8 | 500 | 15 | 0.07 | 0.01 | | Passive-20/400-PM | 20 | 2 | 400 | 8 | 500 | 15 | 0.07 | 0.01 | | Passive-20/400DC-PM | 20 | 2 | 400 | 8 | 500 | 15 | 0.07 | 0.01 | Passive-20/400/460DC,
All-glass | 20 | 2 | 400 | 8 | 580 | 15 | 0.07 | 0.01 | | Passive-25/250 | 25 | 2.5 | 250 | 5 | 350 | 15 | 0.07 | 0.01 | | Passive-25/250-PM | 25 | 2.5 | 250 | 5 | 350 | 15 | 0.07 | 0.01 | | Passive-25/250DC | 25 | 2.5 | 250 | 5 | 350 | 15 | 0.07 | 0.01 | | Passive-25/250DC-PM | 25 | 2.5 | 250 | 5 | 350 | 15 | 0.07 | 0.01 | | Passive-30/250 | 30 | 3 | 250 | 5 | 350 | 15 | 0.07 | 0.01 | | Passive-30/250-PM | 25 | 2.5 | 250 | 5 | 350 | 15 | 0.07 | 0.01 | | Passive-30/250DC | 30 | 3 | 250 | 5 | 350 | 15 | 0.07 | 0.01 | | Passive-30/250DC-PM | 30 | 3 | 250 | 5 | 350 | 15 | 0.07 | 0.01 | | Passive-125DC | | | 125 | 3 | 250 | 15 | 0.46 | | | Passive-105/125, 0.15NA | 105 | 3 | 125 | 3 | 250 | 15 | 0.16 | 0.01 | | Passive-105/125, 0.22NA | 105 | 3 | 125 | 3 | 250 | 15 | 0.23 | 0.01 | | Passive-250DC | | | 250 | 5 | 350 | 15 | 0.46 | | | Passive-400DC | | | 400 | 8 | 500 | 15 | 0.46 | | | Passive-200/220, 0.15NA | 200 | 4 | 220 | 5 | 350 | 15 | 0.16 | 0.01 | | Passive-200/220, 0.22NA | 200 | 4 | 220 | 5 | 350 | 15 | 0.23 | 0.01 | | Passive-200/220DC, 0.22NA | 200 | 4 | 220 | 5 | 350 | 15 | 0.23 | 0.01 | | Passive-400/480, 0.22NA | 400 | 8 | 480 | 9 | 750 | 30 | 0.23 | 0.01 | | | Cladding
NA, > | Birefrin-
gence | Proof
test
>, kpsi | Matching active
LIEKKI™ fiber | | Passive-6/125 | | | 100 | Yb1200-6/125DC | | Passive-6/125DC | 0.46 | | 100 | Yb1200-6/125DC | | Passive-6/125DC-PM | 0.46 | 2.0E-04 | 100 | Yb1200-6/125DC-PM | | Passive-10/125 | | | 100 | Yb1200-10/125DC | | Passive-10/125DC | 0.46 | | 100 | Yb1200-10/125DC | | Passive-10/125-PM | | | | Yb1200-10/125DC-PM | | Passive-10/125DC-PM | 0.46 | 1.4E-04 | 100 | Yb1200-10/125DC-PM | | Passive-12/125 | | | 100 | Yb1200-12/125DC | | Passive-12/125DC | 0.46 | | 100 | Yb1200-12/125DC | | Passive-12/125DC-PM | 0.46 | 1.4E-03 | 100 | Yb1200-12/125DC-PM | | Passive-12/125-PM | | 1.4E-03 | 100 | Yb1200-12/125DC-PM | | Passive-20/125 | | | 100 | Yb1200-20/125DC | | Passive-20/125DC | 0.46 | | 100 | Yb1200-20/125DC | | Passive-20/125-PM | | 8.0E-05 | 100 | Yb1200-20/125DC-PM | | Passive-20/125DC-PM | 0.46 | 8.0E-05 | 100 | Yb1200-20/125DC-PM | | Passive-20/400 | | | 50 | Yb1200-20/400DC | | Passive-20/400DC | 0.46 | | 50 | Yb1200-20/400DC | | Passive-20/400-PM | | 1.6E-04 | 50 | Yb1200-20/400DC-PM | | Passive-20/400DC-PM | 0.46 | 1.6E-04 | 50 | Yb1200-20/400DC-PM | Passive-20/400/460DC,
All-glass | 0.22 | | 50 | | | Passive-25/250 | | | 100 | Yb1200-25/250DC | | Passive-25/250-PM | | 1.6E-04 | 100 | Yb1200-25/250DC-PM | | Passive-25/250DC | 0.46 | | 100 | Yb1200-25/250DC | | Passive-25/250DC-PM | 0.46 | 1.6E-04 | 100 | Yb1200-25/250DC-PM | | Passive-30/250 | | | 100 | Yb1200-30/250DC | | Passive-30/250-PM | | 1.6E-04 | 100 | Yb1200-25/250DC-PM | | Passive-30/250DC | 0.46 | | 100 | Yb1200-30/250DC | | Passive-30/250DC-PM | 0.46 | 1.6E-04 | 100 | Yb1200-30/250DC-PM | | Passive-125DC | 0.46 | | 100 | | | Passive-105/125, 0.15NA | | | 100 | | | Passive-105/125, 0.22NA | | | 100 | | | Passive-250DC | 0.46 | | 100 | | | Passive-400DC | 0.46 | | 50 | | | Passive-200/220, 0.15NA | | | 100 | | | Passive-200/220, 0.22NA | | | 100 | | | Passive-200/220DC, 0.22NA | 0.46 | | 100 | | | Passive-400/480, 0.22NA | | | 70 | | * Core diameter specification refers to the mode field diameter. |
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