@zeeshan Ali , I am basically on review for a paper and new in this thing, I know the coupling coefficient is K but how to compute it i have downloaded different references but if you have some reference in which simple and analysis are good you can also share with me. Book is very good i was also trying to download yesterday but didn't found it but today i find the book. thanks, Looking to hear you again from you.
I will try to look forward to that magazine, infact yes it will be helpful. If you know any other supporting stuff or research papers regarding this topic do share as well