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Optical Engineering

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

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 3.03×10-5 can be achieved on the dual PCM-SSRR.

Paper Details

Date Published: 1 May 2010
PDF: 5 pages
Opt. Eng. 49(5) 054401 doi: 10.1117/1.3421551
Published in: Optical Engineering Volume 49, Issue 5
Show Author Affiliations
Hong Seung Kim, Chung-Ang Univ. (Korea, Republic of)
Geum-Yoon Oh, Chung-Ang Univ. (Korea, Republic of)
Young-Wan Choi, Chung-Ang Univ. (Korea, Republic of)

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