Analysis of optical reflection in a chirped distributed bragg reflector

C. J. Wu, B. H. Chu, M. T. Weng

研究成果: 雜誌貢獻文章

27 引文 斯高帕斯(Scopus)

摘要

A theoretical analysis of optical reflection for a dielectric chirped distributed Bragg reflector (DBR) is presented. The chirped DBR is modeled by several sub-DBRs stacked successively with different values in the thickness ratio, ρ = d 2/d 1, where d 2 and d 1 are the thicknesses of two constituent dielectric layers. Reflection spectra are numerically calculated and analyzed by making use of the transfer matrix method in a stratified medium. The results show that such a chirped structure has a weak effect on the fundamental bandgap, but the higher order bandgaps are strongly affected. The second bandgap is apparently broadened due to the shift in its lower band edge. Results of spectra for both TE and TM waves at different incident angles are also given and discussed.

原文英語
頁(從 - 到)129-138
頁數10
期刊Journal of Electromagnetic Waves and Applications
23
發行號1
DOIs
出版狀態已發佈 - 2009 二月 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Physics and Astronomy(all)
  • Electrical and Electronic Engineering

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