Design of a terahertz photonic crystal transmission filter containing ferroelectric material

Tzu Chyang King, Jian Jie Chen, Kai Chun Chang, Chien-Jang Wu

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    The ferroelectric material KTaO3 (KTO) has a very high refractive index, which is advantageous to the photonic crystal (PC) design. KTO polycrystalline crystal has a high extinction coefficient. In this work, we perform a theoretical study of the transmission properties of a PC bandpass filter made of polycrystalline KTO at terahertz (THz) frequencies. Our results show that the defect modes of usual PC narrowband filters no longer exist because of the existence of the high loss. We provide a new PC structure for the high-extinction materials and show that it has defect modes in its transmittance spectra, providing a possible bandpass filter design in the THz region.

    Original languageEnglish
    Pages (from-to)8276-8279
    Number of pages4
    JournalApplied Optics
    Volume55
    Issue number29
    DOIs
    Publication statusPublished - 2016 Oct 10

    Fingerprint

    ferroelectric materials
    Photonic crystals
    Ferroelectric materials
    Crystal filters
    photonics
    filters
    Bandpass filters
    bandpass filters
    crystals
    extinction
    Defects
    defects
    narrowband
    Refractive index
    transmittance
    Crystal structure
    refractivity
    Crystals
    crystal structure
    coefficients

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics
    • Engineering (miscellaneous)

    Cite this

    Design of a terahertz photonic crystal transmission filter containing ferroelectric material. / King, Tzu Chyang; Chen, Jian Jie; Chang, Kai Chun; Wu, Chien-Jang.

    In: Applied Optics, Vol. 55, No. 29, 10.10.2016, p. 8276-8279.

    Research output: Contribution to journalArticle

    King, Tzu Chyang ; Chen, Jian Jie ; Chang, Kai Chun ; Wu, Chien-Jang. / Design of a terahertz photonic crystal transmission filter containing ferroelectric material. In: Applied Optics. 2016 ; Vol. 55, No. 29. pp. 8276-8279.
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