100 Gbit LR4 multiple splitting
Sometimes it is needed to tap a 100 Gbit LR4 link more than one time, this is not easy because the optical budget is too small to do that. What you can do is to use a Packetmaster to do this but if you only need a full duplicated signal it is an expensive solution.
A much cheaper and easier way is to do it in Layer1 with the Cubro optical amplifier, and two optical taps.
1) Tap the link take 20 % of the optical power
2) Feed this 20 % optical power to the OA
3) Get an amplification between 14 and 18 dBm
4) Split this traffic by 4 with a special optical Cubro tap