Series Preface |
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ix | |
Preface |
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xiii | |
Authors |
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xvii | |
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1 | (18) |
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1.1 Physics of Fabry--Perot Cavities |
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1 | (3) |
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1.2 Principles of Fiber-Optic Fabry--Perot Interferometric (FFPI) Sensors |
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4 | (15) |
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1.2.1 Two-Beam Interference |
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4 | (3) |
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1.2.2 Three-Beam Interference |
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7 | (5) |
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1.2.3 Multi-Beam Interference |
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12 | (6) |
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18 | (1) |
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Chapter 2 Microstructures of FFPI Sensors |
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19 | (44) |
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2.1 Singlemode FFPI Structures |
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20 | (23) |
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2.1.1 Intrinsic FFPI Sensors |
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20 | (1) |
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2.1.1.1 IFFPI Structures Based on FBG Pairs |
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20 | (3) |
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2.1.1.2 IFFPI Structures Based on Reflective Films |
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23 | (2) |
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2.1.1.3 IFFPI Structures Based on Air Holes |
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25 | (3) |
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2.1.1.4 IFFPI Structures Based on Fusion Splicing of Different Kinds of Fibers |
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28 | (3) |
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2.1.1.5 Asymmetric IFFPI Structures |
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31 | (1) |
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2.1.2 Extrinsic FFPI Sensors |
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32 | (1) |
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2.1.2.1 Capillary-Aligned EFFPI |
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33 | (1) |
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2.1.2.2 EFFPI Based on Fiber End and Diaphragm |
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34 | (1) |
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2.1.2.3 EFFPI Based on Microfabrication Technologies |
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35 | (4) |
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2.1.2.4 EFFPI Based on Capillary or Hollow Fiber |
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39 | (1) |
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2.1.2.5 EFFPI Based on Bubble |
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39 | (1) |
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2.1.2.6 EFFPI Based on Reflective Film |
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40 | (2) |
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2.1.2.7 EFFPI Based on Sensitive Film |
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42 | (1) |
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2.2 Multimode FFPI Sensors |
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43 | (2) |
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45 | (3) |
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2.3.1 Intrinsic--Extrinsic Hybrid FFPIs |
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46 | (2) |
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2.3.2 Hybrid FFPI with Other Fiber-Optic Structures |
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48 | (1) |
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2.4 Microstructured FFPI Sensors |
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48 | (15) |
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2.4.1 Photonic Crystal Fiber FFPIs |
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48 | (3) |
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2.4.2 Microstructured Optical Fiber FFPIs |
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51 | (3) |
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2.4.3 Microfiber or Tapered FFPIs |
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54 | (1) |
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55 | (8) |
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Chapter 3 Fabrication Techniques for FFPI Sensors |
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63 | (38) |
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3.1 Femtosecond Laser Micromachining |
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63 | (10) |
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3.1.1 Open Notch FFP Sensor Fabricated by Femtosecond Laser |
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63 | (6) |
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3.1.2 Sealed Fiber-Optic EFPI Fabricated by Femtosecond Laser |
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69 | (3) |
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3.1.3 Intrinsic Fiber-Optic FPI Fabricated by Femtosecond Laser |
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72 | (1) |
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3.2 Deep UV Laser Micromachining System |
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73 | (7) |
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3.2.1 Direct Engraving of FFPI Strain Sensor on Silica Fibers |
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74 | (1) |
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3.2.2 Self-Enclosed FFPI Strain, Pressure, Refractive Index, and Temperature Sensors |
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75 | (3) |
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3.2.3 Sapphire FFPI Sensor |
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78 | (2) |
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3.3 FIB Milling (Tapered Fibers) |
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80 | (8) |
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3.4 Chemical Etching (Doped Fibers) |
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88 | (10) |
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3.4.1 Strain Sensor Fabricated by Chemical Etching |
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88 | (2) |
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3.4.2 Pressure Sensor Fabricated by Chemical Etching |
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90 | (2) |
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3.4.3 Vibration Sensor Fabricated by Combination of Chemical Etching and FIB |
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92 | (6) |
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98 | (3) |
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98 | (3) |
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Chapter 4 Physical and Biochemical Sensors Based on FFPIs |
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101 | (28) |
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101 | (12) |
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4.1.1 Temperature Sensors |
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101 | (3) |
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4.1.2 Strain, Displacement, and Force Sensors |
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104 | (3) |
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107 | (4) |
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4.1.4 Acoustics and Ultrasonic Sensors |
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111 | (1) |
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4.1.5 Electric- and Magnetic-Related Sensors |
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112 | (1) |
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113 | (6) |
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4.2.1 Refractive Index Sensors |
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114 | (2) |
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116 | (1) |
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117 | (2) |
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4.2.4 Other Types of Biochemical FFPI Sensors |
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119 | (1) |
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4.3 Temperature-Insensitive or Temperature-Compensated Sensing |
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119 | (10) |
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121 | (8) |
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Chapter 5 Interrogation and Multiplexing Techniques for FFP Sensors |
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129 | (26) |
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129 | (1) |
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5.2 Intensity Interrogating Methods and Instruments |
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129 | (3) |
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5.2.1 Single-Wavelength Intensity Interrogating Method and Instrument |
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129 | (2) |
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5.2.2 Intensity Interrogating Method with Multiple Wavelengths |
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131 | (1) |
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5.3 Spectral Interrogating for Absolute OPD Demodulation |
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132 | (5) |
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5.3.1 Spectral Interrogation Based on Spectrometers |
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132 | (2) |
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5.3.2 Spectral Interrogation Based on Tunable Filters |
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134 | (2) |
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5.3.3 Spectral Interrogation Based on Swept or Tunable Lasers |
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136 | (1) |
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5.3.4 Comparison of Different Spectral Interrogation Methods |
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137 | (1) |
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5.4 OPD Demodulation Methods |
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137 | (6) |
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5.4.1 OPD Demodulation Based on Spectrum Interrogation and Fringe Counting |
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137 | (1) |
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5.4.2 OPD Demodulation Based on Spectrum Interrogation and Fourier Transform |
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138 | (3) |
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5.4.3 OPD Demodulation Based on Interferometric Scanning in WLI |
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141 | (2) |
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5.4.4 Comparison of OPD Demodulation Methods |
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143 | (1) |
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5.5 Multiplexing Methods of FFP Sensors |
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143 | (12) |
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5.5.1 Spatial Frequency-Division Multiplexing |
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143 | (1) |
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5.5.2 Coarse Wavelength-Division Multiplexing |
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144 | (1) |
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5.5.3 SFDM/CWDM of FFP Sensors |
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145 | (1) |
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5.5.4 Time-Division Multiplexing |
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146 | (2) |
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5.5.5 Multiplexing of FFP Sensors Based on Microwave-Assisted Reconstruction |
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148 | (1) |
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5.5.6 Coherence Multiplexing Based on Interferometric Scanning WLI |
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149 | (1) |
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5.5.7 Comparison of Multiplexing Methods |
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150 | (1) |
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151 | (4) |
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155 | (20) |
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6.1 Structural Health Monitoring |
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155 | (2) |
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6.2 Energy (Oil, Gas, Electricity) |
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157 | (3) |
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6.3 Aerospace (Aircraft, Engines) |
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160 | (3) |
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163 | (6) |
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169 | (6) |
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172 | (3) |
Index |
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175 | |