Figure 2
Dependence of the coupling efficiency on the system geometry. (a) Coupling efficiency as a function of the nanofiber radius r f and the nanowire length L d for the case of the nanowire radius r d = 70 nm. (b–e) Same as (a), for the case of the nanowire radius r d = 80 nm, 85 nm, 90 nm, and 100 nm, respectively. The magenta and black solid lines represent the beat length \({L}_{{\rm{d}},{\rm{beat}}}=\lambda /\{{n}_{{\rm{eff}},{\rm{s}}}^{\mathrm{(1)}}-{n}_{{\rm{eff}},{\rm{s}}}^{\mathrm{(2)}}\}\) and the Fabry-Perot resonant length \({L}_{{\rm{d}},{\rm{FP}}}=\lambda /{n}_{{\rm{eff}},{\rm{s}}}^{\mathrm{(1)}}\), respectively, obtained by the supermode analysis.
