Page 8 - Fiber Bragg Gratings
P. 8
Contents
Preface xiii
Chapter 1 Introduction 1
1.1 Historical perspective 2
1.2 Materials for glass fibers 4
1.3 Origins of the refractive index of glass 6
1.4 Overview of chapters 8
References 10
Chapter 2 Photosensitivity and Photosensitization of
Optical Fibers 13
2.1 Photorefractivity and photosensitivity 14
2.2 Defects in glass 16
2.3 Detection of defects 19
2.4 Photosensitization techniques 20
2.4.1 Germanium-doped silica fibers 21
2.4.2 Germanium-boron codoped silicate fibers 27
2.4.3 Tin-germanium codoped fibers 29
2.4.4 Cold, high-pressure hydrogenation 29
2.4.5 Rare-earth-doped fibers 34
2.5 Densification and stress in fibers 35
2.6 Summary of photosensitive mechanisms in
germanosilicate fibers 36
2.7 Summary of routes to photosentization 38
2.7.1 Summary of optically induced effects 42
References 44
Chapter 3 Fabrication of Bragg Gratings 55
3.1 Methods for fiber Bragg grating fabrication 55
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