Mode Field Adapter (MFA)
Mode field adapter for high-power fiber laser and amplifier systems, engineered to transition between different core/cladding sizes while minimizing insertion loss and beam degradation.
Technical Specifications
Parameter
Specification
Unit
Port Configuration
1x1
-
Signal Wavelength Range
1030 - 1080 or 1450 - 1600
nm
Forward Insertion Loss (6/125 to 10/125)
0.3
dB
Forward Insertion Loss (10/125 to 20/125)
0.4
dB
Forward Insertion Loss (10/125 to 25/250)
0.5
dB
Forward Insertion Loss (10/125 to 20/400)
0.5
dB
Forward Insertion Loss (20/250 to 30/250)
0.2
dB
Backward Insertion Loss
0.2 to 0.7
dB
Polarization Extinction Ratio (PM)
≥ 18
dB
Polarization Dependent Loss (SM)
≤ 0.15
dB
Return Loss
≥ 45
dB
Standard Package Options
D1-D7 Standard KernsOptic package family
-
Package Dimensions
D1: dia. 4.0 x 60 mm to D7: 100 x 28 x 12.6 mm
-
Operating Temperature
-5 to +70
°C
Technical Datasheet Note
Custom fiber matching pairs are reviewed by engineering.
Custom fiber matching pairs are reviewed by engineering.
Configuration and ordering notes
Configuration parameters include input fiber type (e.g. single-mode 10/125) and target output fiber (e.g. large-mode-area 20/400 or 25/250), power level, and PM vs non-PM requirement.
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
Inter-stage coupling in MOPA fiber lasers, seed laser to power amplifier mode matching, fiber laser delivery output, and high-brightness diode systems.
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.