Topology optimized mode multiplexing in silicon-on-insulator photonic wire waveguides

Louise Floor Frellsen, Yunhong Ding, Ole Sigmund, Lars Hagedorn Frandsen

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    We design and experimentally verify a topology optimized low-loss and broadband two-mode (de-)multiplexer, which is (de-)multiplexing the fundamental and the first-order transverse-electric modes in a silicon photonic wire. The device has a footprint of 2.6 μm x 4.22 μm and exhibits a loss 14 dB in the C-band. Furthermore, we demonstrate that the design method can be expanded to include more modes, in this case including also the second order transverse-electric mode, while maintaining functionality.
    Original languageEnglish
    JournalOptics Express
    Issue number15
    Pages (from-to)16866-16873
    Publication statusPublished - 2016


    • Mathematical methods in physics
    • Numerical approximation and analysis
    • Modes
    • Subwavelength structures
    • Integrated optics devices


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