摘要
Based on the quarter-wave dielectric mirror (Bragg reflector), a chirp scheme to enhance the bandwidth is proposed. We model the chirped mirror by successively cascading a number of sub-Bragg reflectors in which the optical lengths of the two constituent dielectric layers in each sub-Bragg reflector are varied in a linear chirp manner. With the change in the chirp parameter, it is seen that the reflection bandwidth is pronouncedly enlarged due to the shift in the bandedges. In addition, a broader bandwidth can be obtained when a different chirp arrangement of structure is designed. Investigation of angle-dependent reflectance for the TE wave is also given.
| 原文 | 英語 |
|---|---|
| 頁（從 - 到） | 437-447 |
| 頁數 | 11 |
| 期刊 | Journal of Electromagnetic Waves and Applications |
| 卷 | 23 |
| 發行號 | 4 |
| DOIs | |
| 出版狀態 | 已發佈 - 2009 2月 1 |
ASJC Scopus subject areas
- 電子、光磁材料
- 一般物理與天文學
- 電氣與電子工程