FBT Coupler
Product Description
TS 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.
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 |
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|
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 |
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|
Operating Temperature |
℃ |
|
-20～75 |
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1×2 Tap Coupler(WTC)
|
Wavelength |
nm |
|
1550 or on Request |
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|
Bandwidth |
nm |
|
±20 |
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|
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 |
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|
Operating Temperature |
℃ |
|
-20～75 |
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Three-Windows Couple
|
Wavelength |
nm |
|
1310&1490&1550 |
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|
Bandwidth |
nm |
|
1310±40,1490±10,1550±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 |
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 |
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(TWC)1×N Monolithic Single Mode Couple(MSC)
|
Wavelength |
nm |
|
1310,1550 or on Request |
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|
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 |
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|
Operating Temperature |
℃ |
|
-20～75 |
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Payment Terms︰ TT