Optical Sensors based on Surface Plasmon Resonance

This brief review presents the recent process in optical sensors based on surface plasmon resonance (SPR). In particular, it will focus on the optical sensors that employ the change of refractive index as the sensing transduction signal. Various detection schemes of optical sensors which include phase modulation, wavelength modulation and intensity modulation are discussed. The performance advantageous and disadvantageous of the description of optical sensors structure and their respective experimental configurations are also described. The examples of detection in chemistry, biology and heavy metals will be presented. Future prospects of surface plasmon resonance (SPR) sensing technology is also discussed.