Topology optimised planar photonic crystal building blocks

Lars Hagedorn Frandsen, K. K. Hede, Peter Ingo Borel, Jakob Søndergaard Jensen, Ole Sigmund

    Research output: Contribution to conferencePosterResearch


    A photonic crystal waveguide (PhCW) 1x4 splitter has been constructed from PhCW 60° bends1 and Y-splitters2 that have been designed individually by utilising topology optimisation3. The splitter has been fabricated in a silicon-on-insulator material (Fig. 1) and exhibits a broadband splitting for the TE-polarisation with an average excess loss of 1.55±0.54 dB for a 110 nm bandwidth. The 1x4 splitter demonstrates that individual topology-optimised parts can be used as building blocks to realise high-performance nanophotonic circuits. 1L. H. Frandsen et al., Opt. Express 12, 5916-5921 (2004) 2P. I. Borel et al., Electron. Lett. 41, 69-71 (2005) 3J. S. Jensen and O. Sigmund, App. Phys. Lett. 84, 2022-2024 (2004)
    Original languageEnglish
    Publication date2005
    Publication statusPublished - 2005
    EventNanoDay DTU - Kgs. Lyngby, Denmark
    Duration: 8 Jun 2005 → …


    ConferenceNanoDay DTU
    CityKgs. Lyngby
    Period08/06/2005 → …


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