Research Activities Arising From the University of Kent

Abstract

Abstract:In this paper I describe research activities in the field of optical fiber sensing undertaken by me after leaving the Applied Optics Group at the University of Kent. The main topics covered are long period gratings, neural network based signal processing, plasmonic sensors, and polymer fiber gratings. I also give a summary of my two periods of research at the University of Kent, covering 1985Kent, covering -1988Kent, covering and 1991Kent, covering -2001

Review of surface plasmon resonance and localized surface plasmon resonance sensor

“…PSPs can be excited on the metallic films which have several approaches as the Kretschman [7] and Otto [8] prism coupler, optical waveguides coupler [9], diffraction gratings [10], and optical fiber coupler [11], whereas LSPs can be excited on metallic nano-particles, which both can induce a strong enhancement of electromagnetic filed in the near-field region (resonance amplification), leading to a extensive application in surface-enhanced Raman scattering (SERS) [12], fluorescence enhancement [13], refractive index (RI) measurement [14], biomolecular interaction detection [15], and so on.…”

Theory and Modeling of Slab Waveguide Based Surface Plasmon Resonance

“…PSPs can be excited on metallic films using a variety of methods, including the Kretschman [7]and Otto [8] prism couplers, optical waveguides couplers [9], diffraction gratings [10], and optical fiber couplers [11]. In contrast, LSPs can be excited on metallic nano-particles, and both can substantially enhance electromagnetic fields in the near-field region (resonance amplification), leading to modern SPR [12].…”

Field trials of fiber Bragg grating settlement sensors in high-speed railways

“…However, conventional methods can not provide accurate, automatic real-time monitoring results. Fiber Bragg grating (FBG) sensors [1][2][3][4] have the advantages of immunity to electromagnetic interference, miniature size, light weight, resistance of corrosion and can be used for the long distance quasi-distributed sensing. FBGs have been packaged into sensors for testing a number of parameters including strain, temperature, pressure and displacement by measuring the shift of the Bragg wavelength caused by the changes of grating period and the effective refractive index.…”