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LIEKKI™ Pump and Signal Combiners

LIEKKI™ (6+1)x1 pump and signal combiners are used to combine the power from six multimode laser pump diodes and couple it with a signal feed. The combined power can be used for high-power fiber amplifier and laser applications in industrial, military, medical and communications. The devices offer efficient power transfer with a maximum conservation of brightness.

LIEKKI™ combiners are available in a variety of pump and signal fiber geometries. Their fiber design provides reliable delivery of high-power levels. LIEKKI™ combiners are optically matched with LIEKKI™ ytterbium fibers.

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   Combiner- 6/125DC Combiner- 10/125DC Combiner- 20/125DC Combiner- 20/400DC
Pump input mechanical
Pigtail length m > 0.5 > 0.5 > 0.5 > 0.5
Core size µm 105 105 105 200
Cladding size µm 125 125 125 220
Core NA   0.151 0.151 0.151 0.22
Signal input mechanical
Core size µm 5.5 ± 0.5 10 ± 1 20 ± 2 20 ± 2
Core NA   0.15 ± 0.01 0.07 ± 0.01 0.07 ± 0.01 0.07 ± 0.01
Cladding size µm 125 ± 2 125 ± 2 125 ± 2 400 ± 8
Combined output mechanical
Core size µm 5.5 ± 0.5 10 ± 1 20 ± 2 20 ± 2
Core NA   0.15 ± 0.01 0.07 ± 0.01 0.07 ± 0.01 0.07 ± 0.01
Cladding size µm 125 ± 2 125 ± 2 125 ± 2 400 ± 8
Cladding NA   0.46 0.46 0.46 0.46
Pigtail length m > 0.5 > 0.5 > 0.5 > 0.5
Optical
Signal wavelength range nm 1000 - 1100 1000 - 1100 1000 - 1100 1000 - 1100
Pump wavelength range nm 900 - 1000 900 - 1000 900 - 1000 900 - 1000
Pump transmission % > 90 > 90 > 90 > 90
Max input power per input fiber W 8 8 8 100
Signal transmission % > 80 > 80 > 80 > 80
Return loss dB > 40 > 40 > 40 > 40
Directivity dB > 40 > 40 > 40 > 40
Other
Operating temperature °C +0 to +30 +0 to +30 +0 to +30 +0 to +30
Storage temperature °C -5 to +70 -5 to +70 -5 to +70 -5 to +70
Package dimensions mm 50 x 5 x 5 50 x 5 x 5 50 x 5 x 5 60 x 12 x 6.5
1 0.22 available with > 80% pump transmission.

 

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