| type | Attenuation value | Connector type | Face grinding method | Fiber type | color | Test wavelength |
|---|---|---|---|---|---|---|
| In-line attenuator | 1dB | LC | PC | Single | blue | 1310nm |
| Adjustable attenuator | 2dB | SC | APC | Attenuated fibers | green | 1550nm |
| Yin-yang attenuator | 5dB | ST | — | — | argent | 1310&1550nm |
| — | 15dB | FC | — | — | — | — |
| — | 30dB | — | — | — | — | — |
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