Fiber optic sensors 35 Gold nanoparticles 12 Metal nanoparticles 12 Fiber optics 10 Optical fibers 10 Technology: general issues 10 History of engineering and technology 9 Fiber Bragg gratings 8 Fibers 8 Diagnosis 5 Fiber Bragg Grating Sensors 5 Gold Nanoparticles 5 Gold nanoparticle 5 Plastic optical fibers 5 Refractive index 5 Signal to noise ratio 5 Temperature measurement 5 Fibre-optic sensor 4 History of engineering & technology 4 Interferometers 4 Optical fiber fabrication 4 Research and information: general 4 Waveguides 4 fiber optics 4 Asymmetric couplers 3 Diseases 3 Electric sensing devices 3 Graphene 3 High sensitivity 3 Optical signal processing 3