A new approach to low loss photonic crystal waveguides

Asger Christian Krüger, Min Zhang, Nathaniel Groothoff, Radu Malureanu, Martin Kristensen

    Research output: Contribution to conferenceConference abstract for conferenceResearchpeer-review


    Photonic crystal waveguides allow ultra-compact realization of integrated optical components because they have high group index. However, they also induce significant losses in effect reducing the scope of their applications. We find that by increasing the photonic crystal hole to pitch ratio r/Λ to 0.388 a low loss transmission band is created below the traditional photonic crystal guiding band. Furthermore this low loss band has sharply defined cutoffs transmission edges for devices with a length of 50 μm or longer. Finite difference time domain and plane wave expansion simulations confirm the results and show that the sharpness of the cutoffs can be explained by the spectral shape of the guiding mode in the band diagram.
    Original languageEnglish
    Publication date2011
    Publication statusPublished - 2011
    EventDanish Optical Society Annual Meeting - Aarhus, Denmark
    Duration: 1 Jan 2011 → …


    ConferenceDanish Optical Society Annual Meeting
    CityAarhus, Denmark
    Period01/01/2011 → …


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