| Title |
Applied of Integrated Optical Biosensor based on Combination of Photonic Crystal Micro-Cavity and Ring Resonator |
| Authors |
김홍승(Kim, Hong-Seung) ; 김두근(Kim, Doo-Gun) ; 오금윤(Oh, Geum-Yoon) ; 이태경(Lee, Tae-Kyeong) ; 최영완(Choi, Young-Wan) |
| DOI |
https://doi.org/10.5370/KIEE.2011.60.4.817 |
| Keywords |
Biosensor ; Finite-difference time-domain method ; Photonic bandgap ; Photonic crystal micro-cavity ; Ring resonator |
| 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 3.03×10-5 can be measured on the SSRR-DPCM. |