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                  2000nm High Power 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
High Power Handling Capability
RD
Radar
Specifications
Parameters Unit  Values
Pass Band Wavelength Range  nm 1950~2050
Max. Insertion Loss  dB 0.9
Typ.  Insertion Loss  dB 0.7
Min. Isolation  dB 25
Typ. Isolation  dB 30
Reflection Band  Wavelength Range  nm 1550~1590
Max. Insertion Loss  dB 0.7
Typ. Insertion Loss  dB 0.5
Min. Isolation  dB 12
Typ. Isolation  dB 15
Min. Return Loss  dB 50
Min. Directivity(over 1550~1590nm) dB 55
Max. PDL  dB 0.1
Typ. PDL dB 0.05
Thermal Stability  dB/ ≤0.005
Max. Optical Power (CW) W 1, 3, 5  or Specify
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 higher, RL will be 5dB lower, optical power is only 1W.
Package Dimensions 
Ordering Information 
AHPFWDM-①①①①--③③-④④④-⑤⑤⑤-
①①①①: Wavelength  ③③: Handling Power  ⑤⑤⑤: Fiber Jacket  on Port 1, 2 & 3
 2057 - 2000nm Pass / 1570nm Reflect  01 - 1W  B - 250um Bare Fiber
 SS - Specify  L - 900um Loose Tube
: Fiber Type  S - Specify
 1 - SMF-28e Fiber (all ports) ④④④: Connector Type on Port 1, 2 & 3
 2 - SMF-28e Fiber at Common & Reflect ports  1 - FC/UPC  : Fiber Length 
       and SM 1950 Fiber at Pass port  2 - FC/APC   0.8 - 0.8m
 S - Specify  3 - SC/UPC  S - Specify
 4 - SC/APC
 N - None
 S - Specify