| Efficient omnidirectional couplers achieved by anisotropic photonic crystal waveguides | |
|---|---|
| 學年 | 98 |
| 學期 | 1 |
| 出版（發表）日期 | 2009-08-01 |
| 作品名稱 | Efficient omnidirectional couplers achieved by anisotropic photonic crystal waveguides |
| 作品名稱（其他語言） | |
| 著者 | Liu, Cheng-Yang |
| 單位 | 淡江大學機械與機電工程學系 |
| 出版者 | Amsterdam: Elsevier BV * North-Holland |
| 著錄名稱、卷期、頁數 | Physics Letters. Section A: General, Atomic and Solid State Physics 373(34), pp.3061-3066 |
| 摘要 | Photonic crystals (PCs) have many potential applications because of their ability to control light-wave propagation. We have investigated omnidirectional couplers in two-dimensional anisotropic PC structures. The anisotropic PC coupler composed of an anisotropic-dielectric cylinder in air is studied by solving Maxwell's equations using the plane wave expansion method and finite-difference time-domain method. The photonic band structures are found to exhibit absolute bandgaps for the square lattices. Numerical simulations show that the incident light-waves at both transverse electric and transverse magnetic modes have efficient coupling in anisotropic PC coupler with square lattices. The guided modes and coupling length are analyzed by considering various line defect anisotropic PC waveguides and interaction regions of couplers. Such a mechanism of omnidirectional coupling should open up a new application for designing components in photonic integrated circuits. |
| 關鍵字 | Coupler;Anisotropic photonic crystal;Coupling length |
| 語言 | en |
| ISSN | 0375-9601 |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | Liu, Cheng-Yang |
| 審稿制度 | |
| 國別 | NLD |
| 公開徵稿 | |
| 出版型式 | 紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/65436 ) |
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