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Fig. 3 | EPJ Techniques and Instrumentation

Fig. 3

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. 3

Microscope image of a silicone oil microdrop around a silica microsphere. a Schematic of a silicone oil microdrop around a silica microsphere (with a fiber stem). b Microscope image of a silicone oil microdrop, of diameter ≈105 μm, around a silica microsphere (bordered by a dashed circle) of diameter ≈40 μm. We form such microdrops by dipping silica microspheres in silicone oils. These drops are positioned very close to tapered fibers to excite their WGMs (similar to the microsphere shown in Fig. 2). Note that the centroid of the liquid microdrop is below the centroid of the much smaller solid microsphere

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