【正文】 (1[zLzLLdzznzndRIn?????() dzzdnzzB )(221)(200????() 112 Intensity Reflection Spectrum Analysis 113 Intragrating Sensing Through Phase Measurement cnz p2????????() ????????? )4()(2nz p() 114 Intragrating Sensing Through Phase Measurement 115 Combined Reflection Spectrum and Phase Measurement 116 Combined Reflection Spectrum and Phase Measurement 117 Low Coherence Reflectivity Measurement 118 Low Coherence Reflectivity Measurement 119 Distinguishing Bragg Grating Strain Effects ])()([)(22 ))((00))((0 dzdeSPdzdeSPLII zLLyzxByxyBx ??????? ???????? ????? ? ?? ??????????????????202020202020yxyyyxxx EEEPEEEpyx pp ,() () ? The reflection distribution from a grating experiencing a general strain state is given by ? With are given by Where are the time averaged scalar magnitudes of the square of the electric fields in x and y direction. ???? 22 E o yandE o x120 Distinguishing Bragg Grating Strain Effects TzzPzPnzz yxxzBx ??????? ????????? 012112022 ) ] )()([)((2)()(TzzPzPnzz xxyxBy ??????? ????????? 012112022 ) ] )()([)((2)()(() () ? For a grating experiencing the most general thermo mechanical strain conditions, the change in the reflection wavelength is given by Where the ponent of the light with its polarization Vector in x and y direction. 121 Distinguishing Bragg Grating Strain Effects 122 Bragg Grating Fiber Laser Sensors Single and Multipoint Bragg Grating Laser Sensors UltraHigh Resolution Bragg Grating Laser Sensors Demodulation 123 Bragg Grating Fiber Laser Sensors ? FBG may also be used as narrowband reflector for forming infiber laser cavities. ? The basic FBG laser sensor employs 2 Bragg grating of matched wavelength to create an infiber cavity or one grating bined with a broadband reflector with Erdoped fiber as the usual gain medium. 124 Single and Multipoint Bragg Grating Laser Sensors 125 Single and Multipoint Bragg Grating Laser Sensors 126 Single and Multipoint Bragg Grating Laser Sensors )(22 0201 LLncfornLcf???? () 127 Single and Multipoint Bragg Grating Laser Sensors 128 UltraHigh Resolution Bragg Grating Laser Sensors Demodulation GLLFLMZFLMZ ???????2() 129 UltraHigh Resolution Bragg Grating Laser Sensors Demodulation 130 UltraHigh Resolution Bragg Grating Laser Sensors Demodulation 131 Bragg Gratings as Interferometric Sensors and Reflective Markers Reflectometric Sensing Arrays Using Bragg Reflectors Nested Fiber Interferometers Using Bragg Reflectors Bragg GratingBased FabryPerot Sensors Collocated FabryPerot Cavities with Wavelength Addressable Cavity Lengths 132 Reflectometric Sensing Arrays Using Bragg Reflectors 133 Reflectometric Sensing Arrays Using Bragg Reflectors 134 Nested Fiber Interferometers Using Bragg Reflectors ???jiij1?? ?)1( ??? jjj ?? ???() () ?Interrogation of the ?The phase at the jth 135 Nested Fiber Interferometers Using Bragg Reflectors 136 Bragg GratingBased FabryPerot Sensors 137 Collocated FabryPerot Cavities with Wavelength Addressable Cavity Lengths 138 Collocated FabryPerot Cavities with Wavelength Addressable Cavity Lengths 139 Other Bragg Sensor Types ? New specially modified or tailored gratings phase shift devices multimode gratings superstructure gratings ?140 Applications of Bragg Grating Sensors Introduction to Aerospace Applications Bragg Grating Sensors in Marine Applications Applications to Civil Engineering Structural Monitoring Bragg Grating for Medical Applications 141 Applications of Bragg Grating Sensors Bragg Sensors Within the Nuclear Power Industry Applications to Power Transmission Lines Other Applications 142 Introduction to Aerospace Applications Monitoring Reinforced carbon Fiber Composite Adaptive Structure Application to Gas Turbine Engines 143 Introduction to Aerospace Applications 144 Introduction to Aerospace Applications 145 Introduction to Aerospace Applications 146 Introduction to Aerospace Applications 147 Introduction to Aerospace Applications 148 Space Vehicular Ultization 149 Bragg Grating Sensors in Marine Applications Transient HullLoading Effects and Composite Panel Slamming Application to Lock Gates Deep BoreHole Applications 150 Transient HullLoading Effects and Composite Panel Slamming 151 Transient HullLoading Effects and Composite Panel Slamming 152 Application to Lock Gates 153 Applications to Civil Engineering Structural Monitoring Applications to Bridges Structural Maintenance and Applications to Tunnels and Underground Civil Works 154 Applications to Bridges 155 Applications to Bridges 156 Applications to Bridges 157 Applications to Bridges 158 Applications to Bridges 159 Bragg Grating for Medical Applications Temp