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Polarization Maintaining Filter Coupler
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Features   Applications
Low Insertion Loss   Fiber Optic Instruments  
High Return Loss   Fiber Amplifiers  
Fiber Lasers
Fiber Sensors
Specifications
Parameters Unit  Values
Port Type   1X2 2X2
Center Wavelength nm 2000
Operating Wavelength Range nm ±50
Max. Excess Loss  dB 1.2 1.5
Max. Uniformity (only for 50/50) dB 0.8 1.0
Tap Ratio (Port 2/4)    1±0.3%, 2±0.6%, 5±1.2%, 10%, and 50% 
Min. Return Loss dB 50
Min. Extinction Ratio (only for F type) dB 20 18
Min. Extinction Ratio (only for B type) dB 18 16
Max. Optical Power (CW) mW 500 (only for Splitter)
Max. Tensile Load N 5
Fiber Type   PM 1550 or PM 1950 Fiber on Port 1 & Port 3
Operating Temperature -5 to +70
Storage Temperature  -40 to +85
* Above specifications are for devices without the connectors.
* For devices with connectors, IL will be 0.3dB higher, RL will be 5dB lower, and ER will be 2dB lower.
 *The PM fiber and the connector key are aligned to the slow axis. And for F type, fast axis is blocked.
Package Dimensions 
Ordering Information
APMFC-①①--③③--⑤⑤⑤⑤-⑥⑥⑥⑥--
①①: Wavelength  : Axis Alignment : Fiber Type on Tap port
20 - 2000nm  F - Fast Axis Blocked  1 - SMF-28e Fiber
SS - Specify  B - Both Axis Working  2 - SM 1950 Fiber
 3 - PM 1550 Fiber
: Port ⑤⑤⑤: Connector Type on Port 1, 2, 3 & 4  4 - PM 1950 Fiber
1 - 1x2  1 - FC/UPC  S - Specify
2 - 2x2  2 - FC/APC
 3 - SC/UPC : Fiber Length
③③: Coupling Ratio  4 - SC/APC  0.8 - 0.8m
 01 - 1/99  N - None  S - Specify
 02 - 2/98  S - Specify
 05 - 5/95
 10 - 10/90 ⑥⑥⑥: Fiber Jacket on Port 1, 2, 3 & 4
 50 - 50/50  B - 250um Fiber
 SS - Specify  L - 900um Loose Tube
 S - Specify