Fused Biconical Taper (FBT) optical splitter is made by bundling two or more optical fibers, then fusing and stretching them on a tapering machine, and real-time monitoring the change of splitting ratio. When the splitting ratio meets the requirements, the fusion and stretching are ended. One end retains one optical fiber (the rest are cut off) as the input end, and the other end serves as multiple output ends.
Low additional loss
Low polarization-dependent loss (PDL)
Good stability
Dual operating windows
Triple operating windows
High wavelength isolation
Compact size
Optional splitting ratio
| Grade | Grade P | Grade A | |
| Parameter | |||
| Operating Wavelength (nm) | 1310, 1550 or others | ||
| Operating Bandwidth (nm) | ±15 | ||
| Typical Additional Loss (dB) | ≤0.10 | ≤0.15 | |
| Insertion Loss (dB) | 50/50 | ≤3.4 | ≤3.6 |
| 40/60 | ≤4.4/2.6 | ≤4.7/2.8 | |
| 30/70 | ≤5.7/1.9 | ≤6.0/2.0 | |
| 20/80 | ≤7.6/1.2 | ≤8.0/1.3 | |
| 10/90 | ≤11.0/0.65 | ≤11.5/0.8 | |
| 5/95 | ≤14.2/0.4 | ≤14.8/0.5 | |
| 2/98 | ≤18.5/0.25 | ≤19.0/0.35 | |
| 1/99 | ≤21.5/0.2 | ≤22.0/0.3 | |
| Polarization Dependent Loss (PDL) (dB) | ≤0.10 | ≤0.15 | |
| Directivity (dB) | ≥55 | ||
| Operating Temperature (℃) | -20~+70 | ||