Thanks for your suggestion,
It seems my switches are the initial steps to make perfect switch, and they are not matured yet. It seems to me that, they work under 1 condition only, if signal is only the sampled signal, otherwise they will not work. Anyway I will try my level best to make them perfect. But it is long way to go.
But before that, I need a ideal Y switch for my thesis work.
So I have another question for you, please help,
Question: Y Switch of this link (see below) can be used instead of the built in ideal Y switch of Optisystem?
Regards