Preface; Contents; 1 Fiber Optic Sensors Based on Nano-Films; Abstract; 1 Introduction; 2 Optical Fiber Hydrogen Sensors Based on WO3-Pd Thin Film on Fiber Tip; 3 Optical Fiber Relative-Humidity Sensors with Dielectric Coatings as Sensing Elements; 4 Sapphire Fiber-Based High-Temperature Sensors with Dielectric Multilayer F-P Structure; 5 Conclusion; References; Lossy Mode Resonance Based Fiber Optic Sensors; 1 Introduction; 2 Theory of LMR; 2.1 Selection of Thin Film Material for Generation of LMR; 2.2 Surface Plasmons and Surface Plasmon Resonance; 2.3 Lossy Modes and Lossy Mode Resonance

2.4 Kretschmann-Reather ATR Method for LMR Generation2.5 LMR Sensing Principle and Performance Parameters; 3 Advantages of LMR over SPR; 4 LMR Based Fiber Optic Sensors; 5 Theoretical Model for Lossy Mode Resonance Based Fiber-Optic Sensors; 5.1 Transfer Matrix Method for a Multilayer System; 5.2 Dispersion Relation of ITO Layer; 5.3 Dispersion Relation of Silica; 6 Recent Advancenents in LMR Bsed Fiber Optic Sensors; 7 Conclusion; References; 3 Plasmonics-Based Fiber Optic Sensors; Abstract; 1 Evolution of Plasmonics: A Brief History; 2 Plasmons or Plasma Oscillations; 3 Surface Plasmons

4 Excitation of Surface Plasmons by Light: Otto and Kretschmann-Raether Configurations5 Minimum of Reflectance at Resonance; 6 Optical Sensing Principle of SPR: Performance Parameters; 7 Fiber Optic SPR Sensor; 8 Selected Significant Works in the Area of Plasmonics-Based Fiber Optic Sensors; 9 Conclusion and Future Scope; Acknowledgments; References; 4 POF Biosensors Based on Refractive Index and Immunocapture Effect; Abstract; 1 Introduction; 2 Sensing Principles; 2.1 Refractive Index as a Sensing Parameter; 2.2 The Principle of Evanescent Wave (EW)

2.3 Surface Plasmon Resonance (SPR) and Localized Surface Plasmon Resonance (LSPR)3 Fabrication Methods and Optical Setups for EW and LSPR; 3.1 Evanescent Wave U-Shape Sensor; 3.1.1 Preparation of U-Shaped Sensor Probes; 3.1.2 Instrumentation and Electronic Set-up; 3.2 Gold Thin Film Evanescent Wave; 3.2.1 Deposition of Gold Thin Film; 3.3 Localized Surface Plasmon Resonance Sensor; 3.3.1 Au Nanorods Production; 3.3.2 AuNRs Capped on the Tip of Plastic Optical Fibers; 3.3.3 Sensor's Setup; 4 Experiments on Refractive Index (RI) Measurements for EW and LSPR; 4.1 U-Shaped Sensor

4.2 Gold Thin Film U-Shaped Sensor4.3 Localized Surface Plasmon Resonance Sensor; 5 Functionalizing POF Sensors for Bacteria Sensing; 6 Experiments with Bacteria; 7 Conclusions; 7.1 LSPR Sensor; 7.2 Gold Thin Film U-Shaped Sensor; 7.3 U-Shaped Sensor; References; 5 Plasma-Based Deposition and Processing Techniques for Optical Fiber Sensing; Abstract; 1 Introduction; 2 Plasma-Based Processes; 2.1 Deposition; 2.1.1 Physical Vapor Deposition (PVD); 2.1.2 Chemical Vapor Deposition (CVD); 2.2 Etching; 2.3 Surface Modification and Functionalization; 3 Plasma Processing for Optical Fibers