1x2 Single Mode FBT Fiber Coupler 1310/1550nm Dual window coupler (DWC) is built by asymmetric coupling technique. The operating bandwidth of this normal coupler is expanding to ±40nm, and the ultra broadband coupler is expanding to ±80nm. The DWC coupler has the same coupling ratio on both 1310nm and 1550nm communication windows, and with low excess loss and low PDL. DWC couplers are widely used for communication systems, CATV and FTTH.
Features
Low insertion loss
Low PDL
High channel isolation
Excellent environmental reliability
Application
CATV Links
PON Networks
FTTX Systems
Optical Signal Distribution
| Parameter | Dual Window Coupler(DWC) |
| Grade | P | A | P | A |
| Operating wavelength (nm) | 1310 and 1550 |
| Operating bandwidth (nm) | ±40 | ±80 |
| Typical excess loss (dB) | 0.07 | 0.1 | 0.07 | 0.1 |
| Insertion loss (dB) | 50/50 | ≤3.6 | ≤3.8 | ≤3.8 | ≤4.0 |
| 45/55 | ≤4.2/3.2 | ≤4.4/3.4 | ≤4.5/3.3 | ≤4.7/3.5 |
| 40/60 | ≤4.7/2.7 | ≤4.9/2.9 | ≤5.0/2.8 | ≤5.2/3.0 |
| 35/65 | ≤5.4/2.4 | ≤5.7/2.6 | ≤5.8/2.5 | ≤6.1/2.7 |
| 30/70 | ≤6.0/1.9 | ≤6.3/2.1 | ≤6.4/2.0 | ≤6.7/2.2 |
| 25/75 | ≤7.0/1.7 | ≤7.3/1.9 | ≤7.3/1.7 | ≤7.7/1.9 |
| 20/80 | ≤7.9/1.3 | ≤8.4/1.4 | ≤8.3/1.3 | ≤8.7/1.5 |
| 15/85 | ≤9.5/1.0 | ≤10.0/1.2 | ≤9.6/1.0 | ≤10.1/1.2 |
| 10/90 | 9.2~11.2/≤0.75 | 8.80~11.40 /≤0.8 | 9.15~11.05 /≤0.75 | 8.75~11.45/≤0.8 |
| 5/95 | 12.05~14.15/≤0.4 | 11.60~14.60 /≤0.5 | 12.00~14.25/≤0.45 | 11.50~14.70/≤0.5 |
| 3/97 | 14.1~16.5/≤0.35 | 13.60~17.05/≤0.45 | 14.00~16.60 /≤0.35 | 13.45~17.15/≤0.45 |
| 2/98 | 15.75~18.45/≤0.3 | 15.15~19.00/≤0.4 | 15.60~18.60/≤0.3 | 14.95~19.20/≤0.4 |
| 1/99 | 18.6~21.6 /≤0.25 | 17.95~22.25/≤0.35 | 18.35~21.85/≤0.25 | 17.60~22.55/≤0.35 |
| PDL (dB) | ≤0.15 | ≤0.2 | ≤0.15 | ≤0.2 |
| Directivity (dB) | ≥55 |
| Operating temperature (℃) | -40 ~ +85 |
| PackageDimension | 250μm bare fiber:Φ3.0×45mm 900μm loose tube:Φ3.0×54mm Φ3.0×60mm 900um/2mm/3mm loosetube:90×20×10mm |
| *The above specification is without connector |
| *Insertion Loss around 1380nm (water peak) is not counted in the specifications above. |
