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Coherent Lightwave Communications Technology

  • Sadakuni Shimada

Table of contents

  1. Front Matter
    Pages i-xiii
  2. Katsushi Iwashita
    Pages 13-41
  3. Katsushi Iwashita, Nori Shibata
    Pages 43-102
  4. Hiromu Toba, Masao Kawachi, Masaru Kawachi
    Pages 103-127
  5. Osamu Ishida, Hiromu Toba, Nori Shibata
    Pages 129-188
  6. Takeshi Ito, Kiyoshi Nosu
    Pages 217-240
  7. Kiyoshi Nosu
    Pages 241-249
  8. Back Matter
    Pages 251-258

About this book

Introduction

This book covers a wide range of technical issues relating to lightwave technologies using high coherence lightwaves. Electromagnetic wave communication started when the first wireless system was invented by Marconi in 1895. However, we had to wait about one hundred years to realize a similar technology in the lightwave frequency region. The invention of lasers in 1960 and two technology innovations in 1970 -low loss silica fiber and semiconductor lasers operating at room temperature - promoted the development of fiber-optic transmission systems. The deployment of high-speed long-haul fiber-optic transmission systems has led to the formation of domestic and international trunk networks. The installed fiber cables in local loop plants provide multimedia communication services including broadband video. However, present lightwave communication systems do not fully utilize the fruitful potential oflightwaves, namely the capacity of extremely high frequency electromagnetic information carrier waves. The frequency oflightwaves used for fiber-optic transmission is about 200 THz 14 (2 x 10 Hz), and the frequency bandwidth of the fiber low loss region is about 13 20 THz (2 x 10 Hz). Recent developments of narrow spectrum width semiconduc­ tor laser and planar optical waveguide devices offer us the possibilities for a new generation of lightwave-based communication systems. This book focuses on system aspects ofthe new generation lightwave communi­ cation technologies such as optical frequency division multiplexing and coherent detection. Chapter 1 overviews lightwave communication system technology.

Keywords

communication communication systems detection development filters laser transmission

Editors and affiliations

  • Sadakuni Shimada
    • 1
  1. 1.Fujitsu Laboratories LtdJapan

Bibliographic information

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