抄録
One-dimensional photonic crystal (1D PhC) cavities are used as ultrasensitive gas sensors due to their high sensitivity to changes in the surrounding environment. One of the issues for typical 1D PhC-based sensors is that the confined optical field does not fully overlap with analytes, which therefore leads to low sensitivity. Herein, we propose and numerically investigate a photonic crystal cavity by introducing a two tangent air hole array to improve the gas refractive index sensitivity. We also investigate the spectral feature of the proposed photonic crystal cavity for varying structure parameters and methane gas concentration. In addition, the coupling efficiency of the waveguide and the influence of the temperature on the proposed structure for sensing applications are analyzed. Theoretical analysis reveals that the proposed two tangent hole structure simultaneously achieves a high sensitivity (353 nm/RIU) and figure of merit (FOM = 1.2 × 104) compared to those observed in previous studies.
| 元の言語 | 英語 |
|---|---|
| 記事番号 | SJJD03 |
| ジャーナル | Japanese Journal of Applied Physics |
| 巻 | 58 |
| 発行部数 | SJ |
| DOI | |
| 出版物ステータス | 出版済み - 1 1 2019 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Engineering(all)
- Physics and Astronomy(all)
これを引用
Proposal of two tangent air hole structure for higher sensitivity gas sensor. / Chen, Zan Hui; Li, Wenying; Han, Yu; Jiang, Haisong; Hamamoto, Kiichi.
：: Japanese Journal of Applied Physics, 巻 58, 番号 SJ, SJJD03, 01.01.2019.研究成果: ジャーナルへの寄稿 › 記事
}
TY - JOUR
T1 - Proposal of two tangent air hole structure for higher sensitivity gas sensor
AU - Chen, Zan Hui
AU - Li, Wenying
AU - Han, Yu
AU - Jiang, Haisong
AU - Hamamoto, Kiichi
PY - 2019/1/1
Y1 - 2019/1/1
N2 - One-dimensional photonic crystal (1D PhC) cavities are used as ultrasensitive gas sensors due to their high sensitivity to changes in the surrounding environment. One of the issues for typical 1D PhC-based sensors is that the confined optical field does not fully overlap with analytes, which therefore leads to low sensitivity. Herein, we propose and numerically investigate a photonic crystal cavity by introducing a two tangent air hole array to improve the gas refractive index sensitivity. We also investigate the spectral feature of the proposed photonic crystal cavity for varying structure parameters and methane gas concentration. In addition, the coupling efficiency of the waveguide and the influence of the temperature on the proposed structure for sensing applications are analyzed. Theoretical analysis reveals that the proposed two tangent hole structure simultaneously achieves a high sensitivity (353 nm/RIU) and figure of merit (FOM = 1.2 × 104) compared to those observed in previous studies.
AB - One-dimensional photonic crystal (1D PhC) cavities are used as ultrasensitive gas sensors due to their high sensitivity to changes in the surrounding environment. One of the issues for typical 1D PhC-based sensors is that the confined optical field does not fully overlap with analytes, which therefore leads to low sensitivity. Herein, we propose and numerically investigate a photonic crystal cavity by introducing a two tangent air hole array to improve the gas refractive index sensitivity. We also investigate the spectral feature of the proposed photonic crystal cavity for varying structure parameters and methane gas concentration. In addition, the coupling efficiency of the waveguide and the influence of the temperature on the proposed structure for sensing applications are analyzed. Theoretical analysis reveals that the proposed two tangent hole structure simultaneously achieves a high sensitivity (353 nm/RIU) and figure of merit (FOM = 1.2 × 104) compared to those observed in previous studies.
UR - http://www.scopus.com/inward/record.url?scp=85072821468&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85072821468&partnerID=8YFLogxK
U2 - 10.7567/1347-4065/ab26ab
DO - 10.7567/1347-4065/ab26ab
M3 - Article
AN - SCOPUS:85072821468
VL - 58
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - SJ
M1 - SJJD03
ER -