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Optical coupling and transport phenomena in chains of spherical dielectric microresonators with size disorder
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) SEM image of 1D chains of spheres self-assembled in trenches etched in a Si substrate. (b) Optical image of structure obtained by micromanipulation of spheres. (c) White light image of 2D array of dye-doped spheres on the glass substrate. Under additional photoexcitation with one can see high modes excited at the equatorial plane of the array as white hexagonal shapes decorating the spheres (shown by arrows). (d) Experimental setup for spatially resolved spectroscopic measurements.

Image of FIG. 2.
FIG. 2.

Scattering spectra obtained from undoped spheres (1–5) coupled to a source of light (dye-doped sphere ). The signal was detected from each sphere using spatial filter with the size of the hole matching the size of the image of sphere. The scattering peaks originate from the WGMs resonances in the sphere. The attenuation was estimated by comparing the intensity of the scattering peaks in different spheres, as illustrated by peaks and for the first and fifth undoped spheres in the chain.

Image of FIG. 3.
FIG. 3.

Dependency of the intensity of scattering peaks produced by different spheres along the chain normalized on the intensity of the same peak in the first undoped sphere as a function of the distance between the centers of these spheres. The plot demonstrates attenuation per sphere for the peaks with the best transport properties for in range.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Optical coupling and transport phenomena in chains of spherical dielectric microresonators with size disorder