T&S Communication coupler manufacturer provides 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 a 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. As a professional coupler factory, T&S provides various kinds of high-quality FBT couplers.

Features of FBT Coupler

Passed Telcordia GR-1221-CORE, and 85℃, 85％RH test up to 1500 hours

Low extra loss

Specifications of FBT Coupler

1×2 Single Mode Coupler(SMC)

1×2 Tap Coupler(WTC)

Three-Windows Couple(TWC)

1×N Monolithic Single Mode Couple(MSC)

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

As a professional fiber optic products supplier, T&S provides various kinds of high-quality optical communications products.