| http://www.w3.org/ns/prov#value | - For example, rings, disks and other geometries formed from a proper section of a sphere may be used as a spherical WGM resonator. [0026]FIGS. 4A and 4B show a disk-shaped WGM resonator 400 and a ring-shaped WGM resonator 420, respectively, formed from nonlinear optical materials.
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