| Preface | p. xiii |
| Basic Technologies | p. 1 |
| Introduction to Passive Optical Components | p. 3 |
| Optical-Fiber Transmission Systems | p. 3 |
| History of Fiber Transmission | p. 3 |
| Optical-Fiber Transmission | p. 4 |
| Optical Trunk System | p. 7 |
| Optical Subscriber Loop System | p. 7 |
| Optical Cable Television System | p. 7 |
| Optical LAN System | p. 10 |
| Optical Fiber and Cable | p. 11 |
| Classification of Optical Fiber | p. 11 |
| Fiber Fabrication Method | p. 16 |
| Optical-Fiber Cable | p. 18 |
| Passive Optical Components and Their Application | p. 20 |
| Classification of Passive Optical Components | p. 20 |
| Mathematical Representation of Passive Optical Components | p. 24 |
| Application for Fiber Transmission | p. 26 |
| Requirements for Passive Optical Components | p. 30 |
| References | p. 31 |
| Characteristics of Optical Fibers | p. 33 |
| Transmission Characteristics of Fibers | p. 33 |
| Basic Equations for Fiber Transmission Characteristics | p. 33 |
| Optical Loss of a Fiber | p. 35 |
| Transmission Characteristics of Single-Mode Fibers | p. 37 |
| Mode Field of Single-Mode Fiber | p. 37 |
| Dispersion of Single-Mode Fiber | p. 42 |
| Transmission Characteristics of Multimode Fibers | p. 46 |
| Mode Number and Loss Characteristics | p. 46 |
| Modal Dispersion and Baseband Characteristics | p. 50 |
| Mode Conversion | p. 51 |
| Mechanical Characteristics | p. 54 |
| References | p. 55 |
| Transmission Characteristics of Passive Optical Components | p. 57 |
| Connection Loss | p. 57 |
| Connection Loss in Single-Mode Fibers | p. 58 |
| Connection Loss in Multimode Fibers | p. 62 |
| Mode Conversion by Connection in Multimode Fibers | p. 65 |
| Experimental Investigation of Mode Conversion | p. 65 |
| Theoretical Investigation of Mode Conversion | p. 67 |
| Influence of Fiber Structure on Connection Loss | p. 76 |
| Loss Properties for Connections in Cascade | p. 77 |
| Modal Noise Caused by Connection | p. 79 |
| Reflection Properties and Influence | p. 80 |
| Reflection Properties of Fusion Splices | p. 80 |
| Reflection Properties of Connectors | p. 83 |
| Low-Reflection Techniques | p. 86 |
| Influence of Reflection | p. 88 |
| References | p. 90 |
| Measurements for Passive Optical Components | p. 93 |
| Fiber Parameter Measurements | p. 94 |
| Single-Mode Fiber Parameter Measurements | p. 94 |
| Multimode Fiber Parameter Measurements | p. 95 |
| Loss Measurement | p. 99 |
| Cutback and Insertion Methods | p. 99 |
| Backscattering Method | p. 105 |
| Wavelength-Dependent Loss Measurement | p. 110 |
| Baseband Frequency and Chromatic Dispersion Measurement | p. 111 |
| Baseband Frequency Measurement in Multimode Fiber Systems | p. 111 |
| Chromatic Dispersion Measurement in Single-Mode Fiber Systems | p. 114 |
| Reflection Properties Measurement | p. 116 |
| Fiber Endface Quality Measurement | p. 118 |
| Optical Crosstalk Measurement | p. 119 |
| Fault Location and Diagnosis Measurement | p. 120 |
| References | p. 125 |
| Simple Connection | p. 129 |
| Fusion Splicing by Discharge | p. 131 |
| Outline and History of Fusion Splicing | p. 131 |
| Fiber-Cutting and Prefusion Method | p. 136 |
| High-Frequency Discharge With High-Voltage Trigger Method | p. 139 |
| AC Discharge Properties | p. 139 |
| HHT Method | p. 146 |
| Characteristics of High-Frequency Discharge | p. 149 |
| Fiber-Alignment Method | p. 151 |
| Surface Tension Effect | p. 156 |
| Uniform Heating for Mass-Fusion Splice | p. 157 |
| Uniform Heating With Two Pairs of Electrodes | p. 157 |
| Uniform Heating Using High-Frequency Discharge | p. 158 |
| Protection | p. 160 |
| Fusion-Splicing Machine | p. 163 |
| References | p. 164 |
| Fusion Splicing Using Gas Laser and Flame | p. 167 |
| Fusion Splicing Using Gas Laser | p. 167 |
| Fusion Splicing Using a Flame | p. 169 |
| References | p. 170 |
| Mechanical and Adhesive-Bonded Splices | p. 173 |
| Outline of Mechanical and Adhesive-Bonded Splices | p. 173 |
| Mechanical Splice | p. 175 |
| Silicon | p. 175 |
| Plastic | p. 178 |
| Glass | p. 178 |
| Other Materials | p. 179 |
| Adhesive-Bonded Splice | p. 180 |
| Plastics | p. 180 |
| Glass | p. 181 |
| Metal | p. 182 |
| References | p. 182 |
| Optical Connectors | p. 185 |
| Outline of Optical Connector | p. 185 |
| Single-Fiber Connectors | p. 189 |
| Array-Fiber Connectors | p. 192 |
| 2D-Fiber Connectors | p. 198 |
| Centering Effect | p. 199 |
| Centering Effects in Ferrule-Type Single-Fiber Connectors | p. 199 |
| Theory of Connection Loss in Ferrule-Type Single-Mode Connectors | p. 201 |
| Centering Effect in Array-Fiber Connectors | p. 206 |
| References | p. 207 |
| Fiber Connection of Special Fibers | p. 209 |
| Connection of Polarization-Maintaining Fiber | p. 209 |
| Fusion Splice of PANDA Fibers | p. 210 |
| Connectors and Mechanical Splices of Polarization-Maintaining Fibers | p. 216 |
| Connection of Fluoride Glass Fiber | p. 216 |
| Connection of Erbium-Doped Fiber | p. 217 |
| Taper Splicing Method (Down-Tapering) | p. 219 |
| Up-Tapering Method | p. 220 |
| TEC Method | p. 220 |
| References | p. 221 |
| Component With Function | p. 223 |
| Optical Coupler and Branch | p. 225 |
| Directional Coupler | p. 225 |
| Scattering Matrix and Classification | p. 225 |
| Coupled-Wave Equation | p. 228 |
| Directional Couplers With a Rectangular Core | p. 232 |
| Examples of Directional Couplers | p. 234 |
| Y-Branch | p. 244 |
| Star Coupler | p. 245 |
| References | p. 250 |
| Optical Filters | p. 253 |
| WDM Filter | p. 254 |
| Bulk-Type WDM Filter | p. 254 |
| Fiber-Type WDM Filter | p. 263 |
| Waveguide-Type WDM Filter | p. 268 |
| Waveguide-Type N [times] N WDM Filter | p. 272 |
| OFDM Filter | p. 273 |
| Fabry-Perot Interferometer-Type Filter | p. 273 |
| Mach-Zehnder Interferometer-Type Filter | p. 277 |
| Ring Resonator-Type Filter | p. 279 |
| Band-Rejection Filters and Bragg Reflectors | p. 281 |
| Optical Signal-Processing Filter | p. 284 |
| References | p. 287 |
| Attenuators, Isolators, and Circulators | p. 291 |
| Optical Attenuators | p. 291 |
| Optical Isolators | p. 293 |
| Optical Circulators | p. 299 |
| Fiber-Type Polarizers | p. 302 |
| References | p. 304 |
| Optical Mechanical Switch | p. 307 |
| General Aspects of Optical Mechanical Switches | p. 307 |
| Application and Classification of Optical Switches | p. 307 |
| Characteristics of Optical Mechanical Switches | p. 311 |
| 1 [times] 1 Mechanical Switch (ON/OFF Switch) | p. 312 |
| 1 [times] N Mechanical Switch | p. 314 |
| 1 [times] 2 Fiber-Moving-Type Switch | p. 314 |
| 1 [times] N Fiber-Moving-Type Switch | p. 316 |
| 1 [times] 2 Optical-Component-Moving-Type Switch | p. 318 |
| N [times] M Mechanical Switch (Matrix Switch) | p. 320 |
| N [times] M Fiber-Moving-Type Switch | p. 320 |
| N [times] M Optical-Component-Moving-Type Switch | p. 323 |
| References | p. 324 |
| Future Technology | p. 325 |
| Fiber and Cable Connection | p. 325 |
| Optical Signal Processing and Optical Interconnection | p. 328 |
| Integrated Passive Optical Circuits | p. 330 |
| References | p. 330 |
| About the Author | p. 331 |
| Index | p. 333 |
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