Introduction to Dense Wavelength Division Multiplexing Technology

Author: Katapodoros
Publisher:
Publish Date: 2001-09-01
Features: Thousands of years ago, people tried to answer a question: Does light always travel in a straight line? Does it also travel in the shape of the medium through which it propagates? Can it advance along the curved form of the medium? With a bucket with holes at the bottom, people understood the latter—how simple it is! Sunlight passing through morning dewdrops forms a rainbow, allowing people to realize that sunlight is made up of many colors—how simple the observation is! Using a polished bronze shield to reflect sunlight and change its direction to project it to a selected position called the focal point. Moreover, the concentrated light has the energy to heat or ignite objects, leading to the birth of glass optical lenses. This book is a specialized monograph on dense wavelength-division multiplexing (DWDM). The book is divided into five parts, each part further divided into several chapters. Part one describes physical optics, including interference, diffraction, refraction, etc., serving as essential preparatory knowledge for understanding Mach-Zehnder or Fabry-Perot interferometers. The second part explains the fundamental principles of optical fibers as transmission media and the characteristics of light transmission through them. It also covers many optical devices, such as filters, multiplexers, demultiplexers, switches, polarizers, light sources, and optical receivers. The third part discusses various coding techniques used in digital and optical transmission. The fourth part provides a concise and simple overview of wavelength-division multiplexing and dense wavelength-division multiplexing, and also discusses DWDM system design issues, as well as network topology and fault avoidance. Finally, the fifth part discusses the current research status in the DWDM field. Each chapter includes exercises, and answers are provided at the end of the book. Relevant references are listed after each part. The main readership of this book includes researchers, engineering and technical personnel engaged in fiber-optic communication, as well as teachers and students of relevant majors in colleges and universities.