Journal of Sensors / 2015 / Article / Fig 3

Research Article

Self-Referenced Plasmon Waveguide Resonance Sensor Using Different Waveguide Modes

Figure 3

(a) The electric field strengths under resonance condition are plotted against the distance from the prism surface with the gold film thicknesses of 40, 55, and 70 nm in TM1 waveguide mode and (b) in TM2 waveguide mode. The silica film has the thickness of 1000 nm. The refractive indices of the prism, gold, silica, and water are 1.515, 0.133 + 3.654, 1.46, and 1.33, respectively. The incident wavelength is 632.8 nm.

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