Infrared tunable multichannel filter in a doped semiconductor-dielectric photonic crystal heterostructure

Hui Chuan Hung, Chien Jang Wu, Shoou Jinn Chang

研究成果: 雜誌貢獻文章同行評審

2 引文 斯高帕斯(Scopus)

摘要

A design of near- to mid-infrared tunable multichannel filter (MCF) based on the doped semiconductor-dielectric photonic crystal (PC) heterostructure is proposed. Here, a strongly extrinsic semiconductor, n-type germanium nGe, is used as one of the constituent layers. The occurrence of multichannel feature originates from the negative-permittivity in the highly doped nGe. The existence of tunable feature is due to its concentration-dependent permittivity. It is of interest to find that, in such MCFs, the number of channels, i.e., the number of resonant transmission peaks, is directly related to the stack number, and these peaks are located within the pass band of the ideal host PC. The multiple channels are blueshifted as the impurity concentration increases. This design suggests an alternative of engineering the pass band for realizing an MCF instead of engineering photonic band gap in a PC containing photonic quantum well structure as a defect. Our analysis is made based on the transfer matrix method together with the Bloch theorem.

原文英語
文章編號6111424
頁(從 - 到)361-366
頁數6
期刊IEEE Journal of Quantum Electronics
48
發行號3
DOIs
出版狀態已發佈 - 2012

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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