Low loss, small crosstalk offset crossing structure for large-scale planar lightwave circuits

Daiki Tanaka, Yuichiro Ikuma, Hiroyuki Tsuda

    Research output: Contribution to journalArticle

    15 Citations (Scopus)

    Abstract

    A low loss, small crosstalk offset crossing structure for a Si wire waveguide is proposed. We analyzed the properties of the structure for both the TE and TM modes by 2-D FDTD (two-dimensional finite difference time domain) simulation. By optimizing the offset crossing structure, a transmission loss of 0.021dB, and crosstalk of -55.0dB was achieved with a crossing angle of 20 degrees for the TE mode. A transmission loss of 0.070dB, and crosstalk of -48.6dB was also achieved with the same crossing angle for the TM mode. The low losses achieved with a small crossing angle makes this structure very useful for highly integrated optical matrix switches, etc.

    Original languageEnglish
    Pages (from-to)407-411
    Number of pages5
    JournalIEICE Electronics Express
    Volume6
    Issue number7
    DOIs
    Publication statusPublished - 2009 Apr 10

    Keywords

    • Crossing
    • Optical circuit
    • Si wire waveguide

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Electrical and Electronic Engineering

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