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(Color online) (a) Example of polymer-tipped optical fiber. (b) SEM images of the probe apex without and with a carbon nanoprobe.
(Color online) FDTD simulations and experimental characterizations (λ = 1 μm). (a) The focus range and (b) the spot diameter of the bare PTOF are given as a function of the PTOF’s ROC. (c) Field map for a selected PTOF (ROC = 1.1 μm) and (d) for the same PTOF with a 130 nm long carbon extra tip. (e) Experimental field distribution at the PTOF’s output retrieved from the Fourier pattern shown in the inset. (f) Field distribution for the same PTOF with the carbon extra tip.
(Color online) (a) Experimental shear-force controlled s-SNOM setup. (b) AFM image of a 3 μm wide ion-exchanged waveguide made with the hybrid probe and corresponding profile. (c) s-SNOM image of Ag+/Na+ ion-exchange waveguide. (d) Corresponding s-SNOM profile normalized bythe output power (dB). The normalized profile in linear scale is given in the inset.
(Color online) s-SNOM profiles for TE (solid line) and TM (dashed line) guided modes obtained with (a) a bare PTOF and two hybrid probes (b-c). SEM images of the apex are shown in the insets.
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