FBT Coupler
TS Communicationmanufacture 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 Coupleris 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.
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)
|
Wavelength |
nm |
1310,1550,1310&1550 |
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|
Bandwidth |
nm |
±20，±40 |
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|
Coupling Ratio |
50/50 |
40/60 |
20/80 |
10/90 |
||||||
|
Grade |
P |
S |
P |
S |
P |
S |
P |
S |
||
|
Insertion Loss |
dB |
Max |
||||||||
|
Uniformity |
dB |
Max |
/ |
/ |
/ |
/ |
/ |
/ |
||
|
PDL |
dB |
Max |
||||||||
|
Return Loss |
dB |
≥50 |
||||||||
|
Operating Temperature |
℃ |
-20～75 |
||||||||
1×2 Tap Coupler(WTC)
|
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 |
||||||
|
PDL |
dB |
Max |
||||||
|
Return Loss |
dB |
≥50 |
||||||
|
Operating Temperature |
℃ |
-20～75 |
||||||
Three-Windows Couple
|
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 |
4 |
|||||||
|
Uniformity |
dB |
Max |
/ |
/ |
/ |
/ |
/ |
/ |
||
|
PDL |
dB |
Max |
||||||||
|
Return Loss |
dB |
≥50 |
||||||||
|
Operating Temperature |
℃ |
-20～75 |
||||||||
(TWC)1×N Monolithic Single Mode Couple(MSC)
|
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 |
7 |
||||
|
Uniformity |
Max |
dB |
Max |
||||
|
PDL |
Max |
dB |
Max |
||||
|
Return Loss |
dB |
≥50 |
|||||
|
Operating Temperature |
℃ |
-20～75 |
|||||
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