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Sana, Amrita Kumar; Amemiya, Yoshiteru; Yokoyama, Shin
Japanese Journal of Applied Physics, 04/2017, Letnik: 56, Številka: 4SJournal Article
We demonstrated a two-dimensional double-cavity silicon photonic-crystal resonator based neighboring hole radius modulation. By theoretical and experimental analyses, we confirmed that the quality factor (Q-factor) increases at a certain neighboring hole radius. Experimentally, we showed Q-factors of (1.93-2.02) × 105. Moreover, by using sucrose solution, we measured a sensitivity of 1571 nm/RIU (refractive index unit), which is the highest sensitivity ever reported for such a two-dimensional photonic-crystal-based resonator type device. We reported the detection limit (DL) of the refractive index change of (4.15-4.34) × 10−6 RIU, which is one of the best in previous reports.
