設施農業：農業綠能開發與碳匯補償【光電工程研究所/裴靜偉特聘教授】
| 論文篇名 | 英文：Germanium infrared photodetector structure with Ge/SiO2 grating and distributed Bragg reflector for wide-angle and high response |
| 期刊名稱 | OPTICAL AND QUANTUM ELECTRONICS |
| 發表年份,卷數,起迄頁數 | 2023,55(6) |
| 作者 | Hsu, Ching-Yu; Pei, Zingway(裴靜偉)*; Liu, Jia-Ming |
| DOI | 10.1007/s11082-023-04692-1 |
| 英文摘要 | In this research, we present numerical simulations of the electromagnetic properties of a Ge/SiO2 grating structure with a distributed Bragg reflector at the bottom for efficient infrared absorption. We developed a single-period model to simulate an infinite periodic structure and used a Flouquet boundary condition to ensure periodic continuity. We verified the model’s accuracy by testing different mesh densities and comparing the results to theoretical calculations based on Fresnel equations. We found that using 13 meshes per wavelength resulted in an error of less than 1%. Our simulations showed that the structure has a wide incident angle range of 100 degrees at a wavelength of 1550 nm. The absorbance spectrum of the design exhibits broadband properties, covering the primary wavelengths used in optical communications. The absorbance peaks reached 85.95% and 77.08% at 1340 and 1545 nm, respectively, with a minimum absorbance of 40% around 1400 nm. |
| 發表成果與本中心研究主題相關性 | 研究重點在於設計高響應度的紅外光偵測器。所設計的結構具有相當高的光捕捉能力，適合用來設計高密度紅外光偵測器列，可應用於光打系統，對於偵測與分析動物行為具有相當大的作用。 |
