Dual Window Single Mode Fiber Coupler (DWFC, 1310/1550nm)
Standard Dual Window Single-Mode Fiber Coupler (DWFC) operating simultaneously at 1310nm and 1550nm telecom windows. Features low excess loss (<=0.1 dB), low polarization-dependent loss (PDL <=0.08 dB), and high thermal stability across industrial temperatures.
Technical Specifications
Parameter
Specification
Unit
Port Configuration
1x2 / 2x2
-
Operating Wavelengths
1310 and 1550 Dual Window
nm
Operating Bandwidth
±40
nm
Coupling Ratio Options
01/99, 05/95, 10/90, 20/80, 50/50
%
Max. Insertion Loss (50/50)
3.4 (A Grade), 3.6 (P Grade)
dB
Max. Excess Loss
0.10 (A Grade), 0.15 (P Grade)
dB
Max. Polarization Dependent Loss
0.08 (50/50), 0.10 (Tap ratios)
dB
Min. Directivity
55
dB
Min. Return Loss
55
dB
Max. Optical Power (CW)
1000
mW
Fiber Type
Corning SMF-28e+ Fiber
-
Operating Temperature
-40 to +85
°C
Package Dimensions
dia. 3.0 x 40 mm / dia. 3.0 x 54 mm / dia. 3.0 x 60 mm
mm
Technical Datasheet Note
Both Grade A (premium low loss) and Grade P (standard) available. Connectors add 0.3 dB insertion loss.
Both Grade A (premium low loss) and Grade P (standard) available. Connectors add 0.3 dB insertion loss.
Configuration and ordering notes
Configuration parameters include port count (1x2 or 2x2), splitting ratio (e.g. 50/50 for balanced split, 1/99 or 5/95 for power tap), and pigtail length.
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
Dual-band telecommunications systems; CATV distribution; Fiber optic interferometers; Optical power 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.