Novel biosensor based on a stadium-shaped ring structure with a dual photonic crystal microcavity

초록

We have proposed a novel biosensor scheme based on a dual photonic crystal microcavity with a stadium-shaped ring resonator (PCM-SSRR) and characterized the resonance conditions for the first time. The Q of the dual PCM-SSRR was significantly enhanced when a single PCM or a dual PCM was in the same resonance condition with the SSRR. We demonstrated a mutual interference between the dual PCM. In this study, the Q of the dual PCM-SSRR was increased three times over that of the directional coupler structure used with the single PCM. Assuming a detectable spectral resolution of 10 pm, a refractive index resolution of 3.03 X 10(-5) can be achieved on the dual PCM-SSRR. (C) 2010 Society of Photo-Optical Instrumentation Engineers. [DOI: 10.1117/1.3421551]

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