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Fiber-optic Fabry-Perot sensors an introduction

PrinciplesPhysics of Fabry-Perot CavitiesPrinciples of Fiber-Optic Fabry-Perot Interferometric (FFPI) SensorsTwo-Beam InterferenceThree-Beam InterferenceMulti-Beam InterferenceReferencesMicrostructures of ffpi sensorsSinglemode FFPI StructuresIntrinsic FFPI SensorsIFFPI Structures Based on FBG PairsFundamentals of FBGPrinciple of IFFPIs Based on FBGsIFFPI Structures Based on Reflective FilmsIFFPI Structures Based on Air HolesIFFPI Structures Based on Fusion Splicing of Different Kinds of FibersAsymmetric IFFPI StructuresExtrinsic FFPI SensorsCapillary-Aligned EFFPIEFFPI Based on Fiber End and DiaphragmEFFPI Based on Microfabrication TechnologiesEFFPI Based on Capillary or Hollow FiberEFFPI Based on BubbleEFFPI Based on Reflective FilmEFFPI Based on Sensitive FilmMultimode FFPI SensorsHybrid FFPI SensorsIntrinsic-Extrinsic Hybrid FFPIsHybrid FFPI with Other Fiber-Optic StructuresMicrostructured FFPI SensorsPhotonic Crystal Fiber FFPIsMicrostructured Optical Fiber FFPIsMicrofiber or Tapered FFPIsReferencesFabrication Techniques for ffpi s ensorsFemtosecond Laser MicromachiningOpen Notch FFP Sensor Fabricated by Femtosecond LaserSealed Fiber-Optic EFPI Fabricated by Femtosecond LaserIntrinsic Fiber-Optic FPI Fabricated by Femtosecond LaserDeep UV Laser Micromachining SystemDirect Engraving of FFPI Strain Sensor on Silica FibersSelf-Enclosed FFPI Strain, Pressure, Refractive Index, and Temperature SensorsSapphire FFPI SensorFIB Milling (Tapered Fibers)Chemical Etching (Doped Fibers)Strain Sensor Fabricated by Chemical EtchingPressure Sensor Fabricated by Chemical EtchingVibration Sensor Fabricated by Combination of Chemical Etching and FIBSummaryReferencesPhysical and Biochemical Sensors Based on FFPIsPhysical SensorsTemperature SensorsStrain, Displacement, and Force SensorsPressure SensorsAcoustics and Ultrasonic SensorsElectric- and Magnetic-Related SensorsBiochemical SensorsRefractive Index SensorsHumidity SensorsGas SensorsOther Types of Biochemical FFPI SensorsTemperature-Insensitive or Temperature-Compensated SensingReferencesInterrogation and Multiplexing Techniques for ffp s ensorsIntroductionIntensity Interrogating Methods and InstrumentsSingle-Wavelength Intensity Interrogating Method and InstrumentIntensity Interrogating Method with Multiple WavelengthsSpectral Interrogating for Absolute OPD DemodulationSpectral Interrogation Based on SpectrometersSpectral Interrogation Based on Tunable FiltersSpectral Interrogation Based on Swept or Tunable LasersComparison of Different Spectral Interrogation MethodsOPD Demodulation MethodsOPD Demodulation Based on Spectrum Interrogation and Fourier TransformOPD Demodulation Based on Interferometric Scanning in WLIComparison of OPD Demodulation MethodsMultiplexing Methods of FFP SensorsSpatial Frequency-Division Multiplexing Coarse Wavelength-Division Multiplexing SFDM/CWDM of FFP Sensors Time-Division MultiplexingMultiplexing of FFP Sensors Based on Microwave-Assisted ReconstructionCoherence Multiplexing Based on Interferometric Scanning WLIComparison of Multiplexing MethodsReferencesApplicationsStructural Health MonitoringEnergy (Oil, Gas, Electricity)Aerospace (Aircrafts, Engines)BiomedicineOther ApplicationsReferences

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