The chart given below shows the general attenuation loss for common ratio Couplers in FTTH.
| Type Of Coupler |
Split Ratio |
Insertion Loss |
| 1x2 |
50:50 |
3.2/3.2 |
| 1x2 |
45:55 |
3.7/2.8 |
| 1x2 |
40:60 |
4.2/2.4 |
| 1x2 |
35:65 |
4.8/2.1 |
| 1x2 |
30:70 |
5.4/1.8 |
| 1x2 |
25:75 |
6.2/1.5 |
| 1x2 |
15:85 |
8.4/0.91 |
| 1x2 |
10:90 |
10/0.66 |
| 1x2 |
5:95 |
13/0.42 |
| 1x2 |
2:98 |
17/0.29 |
| 1x2 |
1:99 |
20/0.24 |
| 1x3 |
10:45:45 |
10/3.7/3.7 |
| 1x3 |
20:40:40 |
7.2/4.2/4.2 |
| 1x3 |
20:40:40 |
7.2/4.2/4.2 |
| 1x3 |
30:35:35 |
5.4/4.8/4.8 |
| 1x3 |
40:30:30 |
4.2/5.4/5.4 |
| 1x3 |
50:25:25 |
3.2/6.2/6.2 |
| 1x3 |
60:20:20 |
2.4/7.2/7.2 |
| 1x3 |
70:15:15 |
1.8/8.4/8.4 |
| 1x3 |
80:10:10 |
1.2/10/10 |
| 1x4 |
25:25:25:25 |
6.2/6.2/6.2/6.2 |
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