Abstract
The fluctuation of the ambient temperature during the sensing action may seriously affect the performance characteristics of optical sensors based on surface plasmon resonance (SPR). For example, at elevated temperature surface plasmons can be damped due to increased phonon–electron scattering in the metal. Owing to this, the SPR curve becomes broader and, hence, the resolution and sensitivity will be reduced. In this paper, we present a theoretical investigation of the effect of temperature changes on the resolution of SPR sensors. To estimate the resolution of the sensor, we propose to use the figure of merit parameter (FOM) with spectral modulation and data post-processing. We consider two types of configurations, Kretschmann configuration with silver thin film sandwiched between BK7 prism and water-sensing medium and a diffraction-grating-based configuration. We consider sensing action based on angular and wavelength modulations. The obtained results show that the figure of merit (FOMθ) depends strongly on the temperature and decreases with its increasing magnitude. However, with wavelength modulation, (FOMλ) is slowly decreasing with temperature.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
