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(a)-(c) Schematic diagram of the microdiscus “soften-and-squash” fabrication process, (d) top- and (e) side-view of the fabricated microdiscus resonators.
Microdiscus resonator (a) attached to a tapered fiber stem, (b) cross-sectional geometry.
Scattered power spectra of microdiscus resonator when coupled to planar waveguide in the (a) TE and (b) TM polarization.
(a) Resonant wavelengths and associated azimuthal (m) and axial (q) mode numbers for the TE case (with p = 1). The corresponding scattered-power spectrum is superimposed. (b), (c) Representative WGM intensity profiles (corresponding to resonances (A) and (B) of Fig. 3(a)).
(a) Transmission and (b) scattered light spectra for tapered fiber excitation.
Resonant wavelengths and corresponding azimuthal (m) and axial (q) mode numbers, for the TE case and radial mode number (a) p = 3 and (b) p = 4.
Intensity distribution of two higher order modes with mode numbers (a) (m,p,q) = (490,3,8) and (b) (490,4,2) (corresponding to modes (C) and (D) in Figs. 6(a) and 6(b)).
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