Hello Gurpreet
I just want to know more abut what you want to try in your system.Do you want to realize multidiagnal scheme with the help of laser or LED?On which paper you are working on,can you please share that with us?
Till then i suggest you a article to read fro MD codes using LED.Let me know i it helps
https://cdn.optiwave.com/wp-content/uploads/2014/09/30050934/elsvier-2.pdf