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

作者：Kim Hong Seung^*; Oh Geum Yoon; Choi Young Wan

来源：Optical Engineering, 2010, 49(5): 054401.

DOI：10.1117/1.3421551

• biosensor systems
• finite-difference time-domain (FDTD) method
• photonic bandgap
• photonic crystal microcavity
• ring resonator

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.

• 出版日期2010-5