Pump Protector
Protects sensitive pump laser diodes from backward counter-propagating signal and ASE damage in Erbium-doped fiber amplifiers (EDFA) and high-power fiber lasers, featuring high cutoff isolation (up to 40 dB) and low pump insertion loss (0.7 dB max).
Technical Specifications
Parameter
Specification
Unit
Channel (Pass) Wavelength
960 ~ 990 or Specified
nm
Max. Insertion Loss (Pass Band)
0.7
dB
Cut-off (Block) Wavelength Range
1020 ~ 1100 or 1500 ~ 1600
nm
Min. Isolation @ Cut-off Bandwidth
30 / 40 or Specified
dB
Min. Extinction Ratio (PM Fiber)
20
dB
Max. PDL (SM Fiber)
0.15
dB
Min. Return Loss (SM & PM Fiber)
50
dB
Min. Return Loss (MM Fiber)
30
dB
Max. Power Handling (CW)
0.5, 1, 5, 10, 20 or Specified
W
Max. Pulse Power
10 or Specified
kW
Thermal Stability (Wavelength)
0.003
nm/°C
Thermal Stability (Insertion Loss)
0.005
dB/°C
Package Options
dia. 5.5 x 35 (≤5W) / 70 x 12 x 8
mm
Package Dimensions
dia. 5.5 x 35 mm (<=5W) / 70 x 12 x 8 mm (<=20W)
-
Operating Temperature
0 to +70
°C
Storage Temperature
-40 to +85
°C
Technical Datasheet Note
With connectors, maximum power handling is limited to 1W; IL increases by 0.3 dB, RL decreases by 5 dB, and ER decreases by 2 dB. Default connector key is aligned to slow axis.
With connectors, maximum power handling is limited to 1W; IL increases by 0.3 dB, RL decreases by 5 dB, and ER decreases by 2 dB. Default connector key is aligned to slow axis.
Configuration and ordering notes
Pump transmission and signal-blocking bands are reviewed together. Package and thermal conditions depend on the selected power configuration.
Selection Guidance: Compare combiner architectures and fiber matching in our Pump Combiner Selection Guide ↗ or N×1 vs (6+1)×1 Architecture Guide ↗.
Key Applications
Erbium-doped optical fiber amplifiers (EDFA); High-power pump laser protection; Q-switched fiber lasers; Fiber sensing.
Package Drawing
Need an exact configuration?
A quotation review can begin with the application, quantity and available component information. Wavelength, optical power, fiber and termination details can be clarified with engineering.