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Schematic diagram of the proposed ZWPW (a) and ZTPW (b). A ZnO nanowire fabricated by a hydrothermal process is shown in (c). and are geometrical parameters of the plasmonic waveguides. The lengths of waveguides are assumed to be infinite as shown in (d).
Plots of the normalized electric field of the fundamental mode at 632.8 nm for (a) the conventional optical waveguide, (b) the ZWPW, and (c)–(f) the ZTPW. is 75 nm for (a)–(e) and 150 nm for (f), respectively. The parameter is 0.6 for (c) and (d) and 0.7 for (e) and (f), respectively. The covered dielectric medium and the effective mode index are labeled for each case.
The propagation length and the mode width computed for different waveguide configurations with varying . The incident wavelength is 632.8 nm for (a) and (c) and 1550 nm for (b) and (d). The parameter is labeled in the bracket.
The change in the relative mode refractive index and the propagation length computed for different waveguide configurations with varying temperature. (a) and . (b) and .
The dependence of the computed of the fundamental mode on the dimension of waveguide configurations. (a) . (b) . The crosses refer to the maximum side-width which can hold the single-mode transmission. The circular regions correspond to the low temperature sensitive regions and the dashed lines show the athermal condition.
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