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http://dx.doi.org/10.5370/KIEE.2011.60.4.817

Applied of Integrated Optical Biosensor based on Combination of Photonic Crystal Micro-Cavity and Ring Resonator  

Kim, Hong-Seung (중앙대학교 전자전기공학부)
Kim, Doo-Gun (한국광기술원 광융합시스템연구소)
Oh, Geum-Yoon (중앙대학교 전자전기공학부)
Lee, Tae-Kyeong (중앙대학교 전자전기공학부)
Choi, Young-Wan (중앙대 전자전기공학부)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.60, no.4, 2011 , pp. 817-822 More about this Journal
Abstract
We propose a novel ring structure based on the stadium-shaped ring resonator (SSRR) with dual photonic crystal microcavity (DPCM) for biosensor and analyzed the sensing characteristics. The Q-factor of the photonic crystal microcavity (PCM) can be significantly enhanced when the PCM or DPCM has the same resonance condition as the SSRR. The simulation results show that the Q-factor of the SRR with DPCM was increased by three times in comparison with single PCM structure. We also defined a mutual interference between two PCMs. Assuming a detectable spectral resolution of 10 picometers, a refractive index resolution of $3.03\times10-5$ can be measured on the SSRR-DPCM.
Keywords
Biosensor; Finite-difference time-domain method; Photonic bandgap; Photonic crystal micro-cavity; Ring resonator;
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