Enhancement of bandwidth in a chirped quarter-wave dielectric mirror

C. J. Wu*, B. H. Chu, M. T. Weng, H. L. Lee


研究成果: 雜誌貢獻期刊論文同行評審

24 引文 斯高帕斯(Scopus)


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.

頁(從 - 到)437-447
期刊Journal of Electromagnetic Waves and Applications
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


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