Dejing Gong, Yinquan Yuan, Lei Liang, Minghong Yang. Theoretical study on negative permittivity of the material producing sharp surface plasmon resonance dips[J]. Chinese Optics Letters, 2019, 17(4): 042801
- Chinese Optics Letters
- Vol. 17, Issue 4, 042801 (2019)
Fig. 1. Configuration of optical fiber SPR sensors.
Fig. 2. Permittivity of Au and NPM. Squares, Lorent–Drude model; circles, Drude model; solid, real part; open, imaginary part of the permittivity; solid, dash, dot, and dash dot lines are drawn according to
Fig. 3. Normalized transmitted powers corresponding to different values of (a)
Fig. 4. Effect of NPM layer thickness.
Fig. 5. Transmitted spectra for the sensing layers with different RIs.
Fig. 6. (a) Resonance wavelengths and (b) FWHMs of optical fiber SPR sensors coated with NPM1, NPM2, and NPM3.
Fig. 7. Dependence of reflectivity on the wavelength and incident angle for different thicknesses of NPM layers.
Fig. 8. Reflected spectra of prism-based SPR sensors corresponding to different values of (a)
Fig. 9. Reflected spectra of prism-based SPR sensors coated with (a) NPM1, (b) NPM2, and (c) NPM3.
Fig. 10. (a) Resonance angles and (b) FWHMs of prism-based SPR sensors coated with NPM1, NPM2, and NPM3.
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