Filtering properties of photonic crystal dual-channel tunable filter containing superconducting defects

Jia Wei Liu, Tsung Wen Chang, Chien-Jang Wu

    Research output: Contribution to journalArticle

    20 Citations (Scopus)

    Abstract

    In this work, we analyze filtering properties in a photonic crystal (PC) dual-channel tunable filter. The filter structure containing twin superconducting thin films is denoted as (1/2) M S 1 (2/1) N S 2 (1/2) M . Here, 1 and 2 are dielectrics of SrTiO 3 and Al 2 O 3 , respectively. S 1 and S 2 are two high-temperature superconducting thin films taken to be the typical system, YBa 2 Cu 3 O 7-x . The two channel frequencies can be designed to locate within the photonic band gap (PBG) of the original PC (1/2) M . Channel frequencies can be significantly changed by changing N, the stack number of the center PC. With the use of superconducting defects, channel frequencies are temperature-dependent, that is, the filter is thermally tunable. The proposed filter structure is of technical use in superconducting photonic applications at terahertz frequency.

    Original languageEnglish
    Pages (from-to)67-72
    Number of pages6
    JournalJournal of Superconductivity and Novel Magnetism
    Volume27
    Issue number1
    DOIs
    Publication statusPublished - 2014 Jan 1

    Fingerprint

    tunable filters
    Photonic crystals
    Superconducting films
    photonics
    Defects
    defects
    crystals
    Photonic band gap
    filters
    Photonics
    Temperature
    thin films
    temperature

    Keywords

    • Filter
    • Photonic band gap
    • Photonic crystal
    • Superconducting defect

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

    Cite this

    Filtering properties of photonic crystal dual-channel tunable filter containing superconducting defects. / Liu, Jia Wei; Chang, Tsung Wen; Wu, Chien-Jang.

    In: Journal of Superconductivity and Novel Magnetism, Vol. 27, No. 1, 01.01.2014, p. 67-72.

    Research output: Contribution to journalArticle

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