Single window Wideband Fiber Coupler, WFC(Wavelength Flattened Coupler) is used  to passively split or combine light between two fibers. The device is fabricated using fused biconic tapering technique.  The coupling ratio is designed according to customer requirements. Various types of connectors are available.  | 
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|   | -  CATV                               - Telecommunication                               - FTTH                               - Local Area Networks                             - Test Equipment          
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|   | - Low insertion & excess loss                                 - Excellent uniformity                                 - Low PDL                                 - High directivity   - Wide wavelength range                                 |  
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 |  Coupling Ratio |  IL(dB) |  |  50/50 |  3.5 |  |  40/60 |  4.4/2.6 |  |  30/70 |  5.7/1.9 |  |  20/80 |  7.5/1.2 |  |  10/90 |  10.9/0.7 |  |  5/95 |  14.7/0.5 |  |  1/99 |  21.6/0.3 |  
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|   | |  Configuration |  1                         X 2 | 1                         X 4 | 1                         X 8 |  |  Wavelength(nm) |  1310±40                         or 1550±40 |  |  Typical                         Excess Loss(dB) | 0.1 | 0.4 | 0.6 |  |  Max.                         Insertion Loss(dB) | 3.6 |  7.2 | 10.7 |  |  Uniformity(dB) | ≤0.6 | ≤1.0 | ≤1.6 |  |  Directivity(dB) | >55 |  |  Polarization                         Dependent Loss(dB) | ≤0.15 | ≤0.3 | ≤0.5 |  |  Operating                         Temparature(°C) | -40~+80  |  |  Dimension(mm) | 85(L)x75.5(W)x10(H) | 100(L)x80(W)x10(H) | 144(L)x95(W)x10(H) |  | * Without Connector                         Loss |  
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  |   |  |  |  Output                               length |  1~99m  |   Polishing  |  SPC,                               UPC, APC  |   Input                               length  |  1~99m  |   Connector  |  SC,                               ST, FC, LC, MU, D4  |   Package                               type  |  S                               : for Bare fiber(250um)   L : for Loose                               tube(0.9mm)   A : for Cord(2.4mm)  |   Wavelength(nm)  |  1:1310,2:1550  |   Coupling                               ratio  |  5050                               : 50/50, 1090 : 10/90,    25252525                               : 25/25/25/25  |   Configuration  |  1×2:0102,1×4:0104,1×8:0108  |  Single window Wideband Coupler  |  
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