Wideband optical filters with small gap coupled subwavelength metal structures

Boyang Zhang, Junpeng Guo, Robert Lindquist, Shizhuo Yin

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    In this letter, we show that the bandwidth of optical band-stop filters made of subwavelength metal structures can be significantly increased by the strong plasmonic near-field coupling through the corners of the periodic metal squares. The effect of small gap coupling on the spectral bandwidth is investigated by varying the gap size between the metal squares. An equivalent transmission line model is used to fit the transmission and reflection spectra of the metal filters. The transmission line model can characterize well the metal structures with the gap size larger than the near-field decay length. However, it fails to model the transmission and reflection spectra when the gap size reaches the decay range of the near-field in the small gaps.

    Original languageEnglish (US)
    Article number2183584
    Pages (from-to)419-421
    Number of pages3
    JournalIEEE Photonics Technology Letters
    Volume24
    Issue number5
    DOIs
    StatePublished - Feb 27 2012

    Fingerprint

    Optical filters
    optical filters
    Metals
    broadband
    near fields
    metals
    transmission lines
    Electric lines
    bandwidth
    Bandwidth
    filters
    decay

    All Science Journal Classification (ASJC) codes

    • Electronic, Optical and Magnetic Materials
    • Atomic and Molecular Physics, and Optics
    • Electrical and Electronic Engineering

    Cite this

    Zhang, Boyang ; Guo, Junpeng ; Lindquist, Robert ; Yin, Shizhuo. / Wideband optical filters with small gap coupled subwavelength metal structures. In: IEEE Photonics Technology Letters. 2012 ; Vol. 24, No. 5. pp. 419-421.
    @article{b905811e90434e1fb7aa48c11086cd27,
    title = "Wideband optical filters with small gap coupled subwavelength metal structures",
    abstract = "In this letter, we show that the bandwidth of optical band-stop filters made of subwavelength metal structures can be significantly increased by the strong plasmonic near-field coupling through the corners of the periodic metal squares. The effect of small gap coupling on the spectral bandwidth is investigated by varying the gap size between the metal squares. An equivalent transmission line model is used to fit the transmission and reflection spectra of the metal filters. The transmission line model can characterize well the metal structures with the gap size larger than the near-field decay length. However, it fails to model the transmission and reflection spectra when the gap size reaches the decay range of the near-field in the small gaps.",
    author = "Boyang Zhang and Junpeng Guo and Robert Lindquist and Shizhuo Yin",
    year = "2012",
    month = "2",
    day = "27",
    doi = "10.1109/LPT.2012.2183584",
    language = "English (US)",
    volume = "24",
    pages = "419--421",
    journal = "IEEE Photonics Technology Letters",
    issn = "1041-1135",
    publisher = "Institute of Electrical and Electronics Engineers Inc.",
    number = "5",

    }

    Wideband optical filters with small gap coupled subwavelength metal structures. / Zhang, Boyang; Guo, Junpeng; Lindquist, Robert; Yin, Shizhuo.

    In: IEEE Photonics Technology Letters, Vol. 24, No. 5, 2183584, 27.02.2012, p. 419-421.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Wideband optical filters with small gap coupled subwavelength metal structures

    AU - Zhang, Boyang

    AU - Guo, Junpeng

    AU - Lindquist, Robert

    AU - Yin, Shizhuo

    PY - 2012/2/27

    Y1 - 2012/2/27

    N2 - In this letter, we show that the bandwidth of optical band-stop filters made of subwavelength metal structures can be significantly increased by the strong plasmonic near-field coupling through the corners of the periodic metal squares. The effect of small gap coupling on the spectral bandwidth is investigated by varying the gap size between the metal squares. An equivalent transmission line model is used to fit the transmission and reflection spectra of the metal filters. The transmission line model can characterize well the metal structures with the gap size larger than the near-field decay length. However, it fails to model the transmission and reflection spectra when the gap size reaches the decay range of the near-field in the small gaps.

    AB - In this letter, we show that the bandwidth of optical band-stop filters made of subwavelength metal structures can be significantly increased by the strong plasmonic near-field coupling through the corners of the periodic metal squares. The effect of small gap coupling on the spectral bandwidth is investigated by varying the gap size between the metal squares. An equivalent transmission line model is used to fit the transmission and reflection spectra of the metal filters. The transmission line model can characterize well the metal structures with the gap size larger than the near-field decay length. However, it fails to model the transmission and reflection spectra when the gap size reaches the decay range of the near-field in the small gaps.

    UR - http://www.scopus.com/inward/record.url?scp=84863167156&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=84863167156&partnerID=8YFLogxK

    U2 - 10.1109/LPT.2012.2183584

    DO - 10.1109/LPT.2012.2183584

    M3 - Article

    VL - 24

    SP - 419

    EP - 421

    JO - IEEE Photonics Technology Letters

    JF - IEEE Photonics Technology Letters

    SN - 1041-1135

    IS - 5

    M1 - 2183584

    ER -