Analysis of tunable multiple-filtering property in a photonic crystal containing strongly extrinsic semiconductor

H. C. Hung, Chien-Jang Wu, T. J. Yang, S. J. Chang

    Research output: Contribution to journalArticle

    10 Citations (Scopus)

    Abstract

    In this work, we analyze the tunable multiple-filtering property at infrared frequency in a finite semiconductor-dielectric photonic crystal (SDPC), (AB) P A, where A is a strongly extrinsic semiconductor, n-type germanium (n-Ge). B is a dielectric material, and P is the number of periods. It is found that multiple filtering phenomenon can be obtained in the region where the permittivity of n-Ge is negative. The number of resonant peaks is found to be equal to P. With the permittivity of n-Ge being concentration-dependent, these resonant peaks can be shifted as a function of impurity concentration. The analysis indicates that such an SDPC can work as a tunable multichannel filter which is of technical use for the semiconductor applications in optical communications.

    Original languageEnglish
    Pages (from-to)2089-2099
    Number of pages11
    JournalJournal of Electromagnetic Waves and Applications
    Volume25
    Issue number14-15
    DOIs
    Publication statusPublished - 2011 Nov 7

    Fingerprint

    Germanium
    Photonic crystals
    germanium
    photonics
    Semiconductor materials
    permittivity
    crystals
    n-type semiconductors
    Permittivity
    optical communication
    Optical communication
    filters
    impurities
    Impurities
    Infrared radiation

    ASJC Scopus subject areas

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

    Cite this

    Analysis of tunable multiple-filtering property in a photonic crystal containing strongly extrinsic semiconductor. / Hung, H. C.; Wu, Chien-Jang; Yang, T. J.; Chang, S. J.

    In: Journal of Electromagnetic Waves and Applications, Vol. 25, No. 14-15, 07.11.2011, p. 2089-2099.

    Research output: Contribution to journalArticle

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