1 – In the white light source component there is a parameter for power you can just change this value.
2 – This question depends on what you are trying to accomplish which to me seems like some sort of SAC-OCDMA. You will have to do some research on this topic, because I’m not really sure. It depends on the code you are using and number or users etc. Try searching the forum for other topics on Hadamard code and SAC-OCDMA.
3 – A while back there was a forum post on this subject.:
Unfortunately we do not have any pre-made examples for this application.