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

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

    研究成果: 雜誌貢獻文章

    20 引文 斯高帕斯(Scopus)

    摘要

    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.

    原文英語
    頁(從 - 到)67-72
    頁數6
    期刊Journal of Superconductivity and Novel Magnetism
    27
    發行號1
    DOIs
    出版狀態已發佈 - 2014 一月 1

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

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