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                   Filter Wavelength Division Multiplexer 
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Features Applications
All Fiber Construction Fiber Optical Test Equipment
High Reliability Fiber Sensor
Outstanding Optical Performance Fiber Lasers
Cost Effective Optical Fiber Amplifier
R&D
Radar
Specifications
Parameters Unit  Values  
Pass Band Wavelength Range  nm 1950~2050
Max. Insertion Loss  dB 0.8
Typ.  Insertion Loss  dB 0.6
Min. Isolation  dB 25
Typ. Isolation  dB 30
Reflection Band  Wavelength Range  nm 1550~1650
Max. Insertion Loss  dB 0.6
Typ. Insertion Loss  dB 0.4
Min. Isolation  dB 12
  Typ. Isolation  dB 15
Min. Return Loss  dB 50
Min. Directivity(over 1550~1650nm) dB 55
Max. PDL  dB 0.1
Typ. PDL dB 0.05
Thermal Stability  dB/℃ ≤0.005
Max. Optical Power (CW) mW 500
Max. Tensile Load  N 5
Fiber Type   SMF-28e Fiber , SM 1950 Fiber or Specify
Operating Temperature   ℃ -5 to +70
Storage Temperature  ℃ -40 to +85
*Above specifications are for device without connector.
*For devices with connectors, IL will be 0.3dB highe and RL will be 5dB lower.
Package Dimensions 
Ordering Information 
AFWDM-①①①①-②②②-③③③-④
①①①①: Wavelength  ③③③: Fiber Jacket  on Port 1, 2 & 3
2057 - 2000nm Pass / 1570nm Reflect  B - 250um Bare Fiber
 L - 900um Loose Tube
②②②: Connector Type on Port 1, 2 & 3  S - Specify
 1 - FC/UPC 
 2 - FC/APC  ④: Fiber Length 
 3 - SC/UPC  0.8 - 0.8m
 4 - SC/APC  S - Specify
 N - None
 S - Specify