Passive Components

Active (2+1)×1 Combiner

A fiber optic active pump combiner (also called a doped fiber pump combiner) is manufactured by coupling the pump power directly into a doped fiber (e.g. erbum-ytterbium). In a traditional pump combiner application, the end-user splices the combiner's passive fiber output to a doped fiber, possibly resulting in back scattering. Lightel's active pump combiner eliminates the splice to the gain element and any backward signal to the pump lasers is reduced.


  • High Optical-Optical Conversion Efficiency
  • Stable and Reliable
  • Custom Configurations Available


  • High Power Fiber Lasers
  • Fiber Amplifiers
Parameter Specification
Port Configuration (1+1)×1 or (2+1)×1
Pump Wavelength 800~1000nm
Signal Wavelength 1030~1080nm or 1550~1600nm
Signal Input Fiber DCF-EY-10/128 LMA-YDF-10/130 M
Pump Fiber 105/125 0.15NA/0.22NA
Output Fiber DCF-EY-10/128 LMA-YDF-10/130 M
Pump Efficiency >90% >90%
Signal Insertion Loss <0.3 dB <0.3 dB
Optical-optical Conversion Efficiency >26% >56%
Total Power Handling 30W 50W
Return Loss >45 dB
Pigtail Standard 1m or custom
Operating Temperature 0~75°C
Storage Temperature -40~85°C
Note1: Values are referenced without connectors.
Note2: Other package dimensions and optical performances available by request.