Surface Plasmon Resonance (SPR) to Magneto-Optic SPR

Abstract

In this editorial, a brief background of the surface plasmon resonance (SPR) principle is discussed, followed by several aspects of magneto-optic SPR (MOSPR) and sensing schemes from the viewpoint of fundamental studies and potential technological applications. New sensitivity metrics are introduced that would allow researchers to compare the performance of SPR and MOSPR-based sensors. Merits of MOSPR over SPR based sensors and challenges faced by MOSPR sensors in terms of their practical use and portability are also considered. The editorial ends with potential new configurations and future prospects. This work is considered highly significant to device engineers, graduate and undergraduate students, and researchers of all levels involved in developing new classes of bio-devices for sensing, imaging, environmental monitoring, toxic gas detection, and surveying applications to name a few.

Kretschmann‐ and Otto‐type surface plasmon resonance waveguide sensors in the terahertz regime

“…Here, we investigate the sensitivity with respect to the temperature change (not to the refractive index one at optical frequencies). 19 The sensitivity is defined as Δf/ΔK where Δf is the frequency shift and ΔK is the temperature one. 12 In Figure 3, a high sensitivity of 2.63 × 10 −2 THz/K is successfully achieved, which is more than three times as large as that of the conventional waveguide sensor, for example, F I G U R E 1 Configuration of a Kretschmann-type waveguide sensor [Color figure can be viewed at wileyonlinelibrary.com] 7.5 × 10 −3 THz/K 12 and 6.6 × 10 −3 THz/K.…”

“…We further discuss the temperature characteristics in Figure 3, in which the temperature is varied from 280 to 320 K. It is found that the frequency dip shifts towards higher frequencies as the temperature is increased. Here, we investigate the sensitivity with respect to the temperature change (not to the refractive index one at optical frequencies) 19 . The sensitivity is defined as Δ f /Δ K where Δ f is the frequency shift and Δ K is the temperature one 12 .…”

Magnetophotonics for sensing and magnetometry toward industrial applications

“…They also allow amplified sensitivity and improved detection limit, as high as 2 × 10 −8 RIU for bilayer or bilayer/multilayers when combined with a PC 46. 181 Thus, it offers many adjustments possible to optimize sensor performance.…”

Theoretical and Experimental Investigation of an All-Fiber Waveguide Coupled Surface Plasmon Resonance Sensor With Au–ZnO–Au Sandwich Structure

“…We can also theoretically calculate the sensitivity as the wavelength shift of per refractive index unit (RIU) for each WCSPR mode as shown in Fig. 7, according to the sensitivity definition in references [20], [21]. When the sensor was used for detecting the test medium with a relatively higher refractive index, the sensitivity will increase dramatically.…”