The author analyzes the physical principles of optical and electronic devices, describes the main types of optical fibers, their properties and applications, as well as the basic methods of measuring the parameters of optical fibers. The book "Physical Foundations of Optoelectronics" is a comprehensive monograph that explores the physical principles and technologies underlying optical and electronic devices. The author delves into the fundamental aspects of optical fibers, their properties, and applications, as well as the primary methods of measuring the parameters of optical fibers. This book is an essential resource for anyone interested in understanding the intricacies of optoelectronic technology and its significance in modern society. The need to study and comprehend the process of technological evolution is crucial for the survival of humanity and the unity of people in a world torn apart by conflict. As technology advances at an unprecedented rate, it is imperative to develop a personal paradigm for perceiving the technological process of developing modern knowledge. This paradigm should be based on the premise that technology is not just a tool for convenience but a means to ensure the survival of our species.

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