780-1550nm 1x3 / 3x3 PM Fused Coupler
Multi-port 1x3 and 3x3 polarization-maintaining fused fiber coupler designed for balanced optical splitting, coherent receiver arrays, and multi-channel fiber sensing.
Technical Specifications
Parameter
Specification
Unit
Center Wavelength
780, 808, 850, 980, 1030, 1064, 1310, 1550
nm
Operating Bandwidth
±20 (1310/1550), ±10 (780-1064)
nm
Configuration
1x3 or 3x3
-
Max. Excess Loss
0.8 (1310/1550), 1.0 (980-1064), 1.2 (780-850)
dB
Max. Insertion Loss
≤ 6.0 (1310/1550nm 1x3 standard)
dB
Uniformity
≤ 0.8
dB
Min. Extinction Ratio
≥ 20
dB
Min. Directivity
≥ 50
dB
Min. Return Loss
≥ 50
dB
Max. Optical Power (CW)
500
mW
Fiber Type
PM Panda Fiber
-
Package Dimensions
dia. 3.0 x 54 mm (250um) / dia. 4.0 x 70 mm (900um)
-
Operating Temperature
-5 to +70
°C
Technical Datasheet Note
All ports aligned to slow axis by default. Custom split ratios (e.g. 10/10/80 or uniform 33/33/33) and fast-axis blocking available on request.
All ports aligned to slow axis by default. Custom split ratios (e.g. 10/10/80 or uniform 33/33/33) and fast-axis blocking available on request.
Configuration and ordering notes
Configuration parameters include input/output port configuration (1x3 star splitter vs 3x3 matrix coupler), operating wavelength, split ratio balance, and connector types.
Selection Guidance: Review extinction ratio formulas, axis alignment, and splicing tolerances in our PM Fiber Components & Extinction Ratio Guide ↗ or Fiber Polarizer Selection Guide ↗.
Key Applications
3-channel interferometric fiber sensors, coherent optical mixer arrays, multi-branch laser distribution, and distributed fiber vibration monitoring.
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.