Application of Amplifying Technologies to Increase Optical Signal Power Journal title: Scientific Work Authors: Khayala Ismayilova, Aygun Adilova, Farrukh Zeynalov, Ilaha Mahmudova, Aydan Aghayeva Subject(s): Arts and Literature, Astronomy/Astrophysics/Space Science, Biological Sciences, Computer and Information Science, Electrical and Electronic Engineering, Engineering, Humanities, Linguistics, Mathematics, Medicine, Literature, Agricultural Science