Our instruments have a dynamic range of 27 dB optical power. The table below gives a rough estimate of each device’s loss.
When using low reflectivity FBGs such as drawtower gratings the optical power budget is reduced from 27 dB to 11 dB.
| Device | Optical loss |
1 x 2 coupler | 6db |
1 x 4 coupler | 12db |
1 x 8 coupler | 18db |
FC/APC Uniter | 1db |