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| Figure 2: FDTD simulation of light field in the whole sensing system: (a) light frequency resonant in the cavity without sensing object; (b) cavity with a single SO having no eigenmode resonant with the light; (c) cavity with two SOs, one SO has eigenmode and the other has no eigenmode resonant with the light, and (d)cavity with two SOs having eigenmodes resonant with the incident light. |
