Page 6 - Optical Switching And Networking Handbook

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CONTENTS

Preface xi
Acknowledgments xiii

Chapter 1 Introduction to Optical Communications 1
Transmission System Terms 3
History of Optical and Fiber in Telecommunications 8
The Demand for Bandwidth 9
Fiber Justification 13
How It Works 14
Facts about Fiberoptics 15
Fiber Myths 17
Types of Fibers 19
An Application of Fiberoptics 20
Growth in Fiber-Based Systems 22
The Emergence of Wavelength-Division Multiplexing 24

Chapter 2 Basic Fiberoptics Technologies 27
What About the Local Carrier? 32
The Fiber Concept 33
Transmitting the Signal
on the Glass 34
Types of Fiber 37
Fiber Cable Types 38
Benefits of Fiber over Other Forms of Media 44
Bending Cables 45
Sending Light Down the Wires 46
Lasers 48
Fiber Cable Conditions 49
Getting Fiber to Carry the Signal 50

Chapter 3 SONET 53

Background Leading to SONET Development 55
The North American Digital Hierarchy 56
DS-0 56
DS-157
DS-3 57

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