أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
Is this really important ? and why ? and where they use this type of medium ?
there are many books on optics and the theory of photonics that should considered to gain depth knowledge on that area of Science.
A nice way to put that knowledge in practice is to join some photonics group for a training.