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EPJ Techniques and Instrumentation
Fig. 11 | EPJ Techniques and Instrumentation

Fig. 11

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. 11

Theoretical cut-off waist size. Theoretically calculated effective index for first few modes in a silica-air waveguide as a function of the core diameter for wavelength λ=780 nm. The waist of a tapered fiber is a silica-air waveguide with core and cladding refractive index ns=1.45 and na=1 respectively. The theoretical cut-off waist size, below which the waist can support only a single mode, has been marked by a dashed black line

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