T&S Communication manufacture and provide a wide breadth of FBT couplers, which includes SM standard coupler, dual-window coupler, three-window coupler, wideband coupler with low insertion loss and high performances. The FBT couplers are available with coupling ration ranging from 1:99 to 50:50. Customized specifications are basically available.
FBT Coupler is a type of splitter which is based on fused biconical taper technology. The technology is widely accepted and adopted in the PON solution. FBT or fused biconical taper is a traditional technology that two fibers are twisted and fused together under high temperature while the device is being elongated and tapered.
Passed Telcordia GR-1221-CORE, and 85℃, 85％RH test up to 1500 hours
Low extra loss
Wavelength | nm | 1310,1550,1310&1550 | ||||||||
Bandwidth | nm | ±20，±40 | ||||||||
Coupling Ratio | 50/50 | 40/60 | 20/80 | 10/90 | ||||||
Grade | P | S | P | S | P | S | P | S | ||
Insertion Loss | dB | Max | 3.4 | 3.6 | 4.4/2.6 | 4.6/2.8 | 7.5/1.2 | 8.0/1.3 | 11.0/0.65 | 12.0/0.8 |
Uniformity | dB | Max | 0.5 | 0.7 | / | / | / | / | / | / |
PDL | dB | Max | 0.15 | 0.2 | 0.2 | 0.25 | 0.2 | 0.25 | 0.2 | 0.3 |
Return Loss | dB | ≥50 | ||||||||
Operating Temperature | ℃ | -20～75 | ||||||||
| Wavelength | nm | 1550 or on Request | ||||||
Bandwidth | nm | ±20 | ||||||
Coupling Ratio | 1/99 | 2/98 | 5/95 | |||||
Grade | P | S | P | S | P | S | ||
Insertion Loss | dB | Max | 21.5/0.22 | 22.0/0.3 | 18.5/0.25 | 19.5/0.35 | 14.0/0.4 | 14.8/0.5 |
PDL | dB | Max | 0.25/0.10 | 0.30/0.15 | 0.25/0.10 | 0.30/0.15 | 0.25/0.10 | 0.30/0.15 |
Return Loss | dB | ≥50 | ||||||
Operating Temperature | ℃ | -20～75 | ||||||
| Wavelength | nm | 1310&1490&1550 | ||||||||
Bandwidth | nm | 1310±40,1490±10,1550±40 | ||||||||
Coupling Ratio | 50/50 | 40/60 | 20/80 | 10/90 | ||||||
Grade | P | S | P | S | P | S | P | S | ||
Insertion Loss | dB | Max | 3.7 | 4 | 4.7/2.7 | 5.0/3.0 | 7.8/1.4 | 8.1/1.7 | 11.2/0.9 | 11.6/1.2 |
Uniformity | dB | Max | 0.5 | 0.7 | / | / | / | / | / | / |
PDL | dB | Max | 0.2 | 0.25 | 0.2 | 0.25 | 0.2 | 0.25 | 0.2 | 0.3 |
Return Loss | dB | ≥50 | ||||||||
Operating Temperature | ℃ | -20～75 | ||||||||
| Wavelength | nm | 1310,1550 or on Request | |||||
Bandwidth | nm | ±20 | |||||
Coupling Ratio | 1×3 | 1×4 | |||||
Grade | P | S | P | S | |||
Insertion Loss | dB | Max | 5.4 | 5.7 | 7 | 7.4 | |
Uniformity | Max | dB | Max | 0.8 | 1.2 | 1.2 | 1.5 |
PDL | Max | dB | Max | 0.2 | 0.3 | 0.2 | 0.3 |
Return Loss | dB | ≥50 | |||||
Operating Temperature | ℃ | -20～75 | |||||
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