In the end, I extend my heartfelt thanks to my friends Jafal and Al-Hayt29. For the useful information they provided, God made it in the balance of your good deeds -------------- And in the end, I present to my friend Robin and the rest of the friends this gift, which is a partial explanation of the version that uses the radio signal injection to the ground using focused white light by an optical fiber or a collecting lens. And the following picture suffices the explanation -------------- I wish you good luck
