1x3 PM Fused Fiber Coupler (Polarization Maintaining)
Monolithic 1x3 Polarization-Maintaining Fused Fiber Coupler designed to split one PM input into three PM outputs with equal (33.3/33.3/33.3) or custom asymmetric splitting ratios. Features high extinction ratio (>20 dB) and low insertion loss across 780nm to 1550nm.
Technical Specifications
Parameter
Specification
Unit
Port Configuration
1x3
-
Center Wavelength
1550, 1310, 1064, 980, 850, 780
nm
Operating Bandwidth
±15 (1310/1550), ±10 (780-1064)
nm
Splitting Ratio
33.3 / 33.3 / 33.3 or custom ratios
%
Max. Excess Loss
0.7 (1310/1550), 0.8 (980/1064), 1.0 (780/850)
dB
Max. Uniformity
0.8 (1310/1550), 1.0 (others)
dB
Min. Extinction Ratio @ 23°C
20 (Slow axis), 18 (Fast axis blocked)
dB
Min. Return Loss
50
dB
Max. Optical Power (CW)
500
mW
Fiber Type
PM Panda Fiber on all ports
-
Operating Temperature
-40 to +85
°C
Storage Temperature
-40 to +85
°C
Package Dimensions
dia. 3.0 x 54 mm / dia. 3.0 x 60 mm / 90 x 14 x 9.5 mm
mm
Technical Datasheet Note
Monolithic 1x3 fusion eliminates cascaded 1x2 stages, reducing total insertion loss and package footprint.
Monolithic 1x3 fusion eliminates cascaded 1x2 stages, reducing total insertion loss and package footprint.
Configuration and ordering notes
Configuration parameters include operating wavelength, desired splitting ratio (equal 1/3 or customized asymmetric tap), and connector polish.
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
Multi-axis fiber optic sensors; Tri-channel optical coherent receivers; Laser seed distribution to amplifier cascades.
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.