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EPJ Techniques and Instrumentation
Fig. 2 | EPJ Techniques and Instrumentation

Fig. 2

From: Integrated end-to-end instrumentation for the study of whispering gallery modes in dynamic liquid micro-cavities coupled to sub-micron tapered fibers

Fig. 2

Microscope image of a silica microsphere. aSide view of a silica microsphere, of ≈53 μm diameter, positioned very close (sub-wavelength gap) to a tapered fiber to excite its WGMs. We fabricate such microspheres by melting the tips of pieces of optical fibers and we retain the fiber stems to control position and alignment of the microspheres. bTop view of the arrangement shown in a. The gap between the microsphere and the tapered fiber is smaller than the resolution of the microscope

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