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(a) Designed microdisk cavity. (b) SEM image of a fabricated microdisk cavity. The inset shows the enlarged image of the microdisk edge. (c) AFM image to show the surface smoothness. (d) SEM image of a coupled-microcavity configuration.
Broadband transmission spectrum of a fiber taper coupled to a microdisk with , , and . The inset shows the expanded transmission dip around the resonant wavelength of 1545.59 nm, while the black solid curve describes a Lorentz fitting.
Measured quality factors (black solid circles), theoretical total quality factors (black solid curve), and theoretical radiation quality factors (dashed curve) of quasi-TE fundamental WGMs depending on the bottom radius of polymer microdisk . Here and .
Calculated mode volumes and figure-of-merit of quasi-TE fundamental WGMs depending on the bottom radius of polymer microdisk. Here and . Inset: the distribution of electric energy density of a typical fundamental quasi-TE eigenmode.
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