Dramatic size reduction of waveguide bends on a micron-scale silicon photonic platform

    Research output: Contribution to journalArticleScientificpeer-review

    99 Citations (Scopus)

    Abstract

    We demonstrate theoretically and experimentally how highly multimodal high index contrast waveguides with micron-scale cores can be bent, on an ultra-broad band of operation, with bending radii below 10 µm and losses for the fundamental mode below 0.02 dB/90°. The bends have been designed based on the Euler spiral and fabricated on 4 µm thick SOI. The proposed approach enabled also the realization of 180° bends with 1.27 µm effective radii and 0.09 dB loss, which are the smallest low-loss bends ever reported for an optical waveguide. These results pave the way for unprecedented integration density in most semiconductor platforms.
    Original languageEnglish
    Pages (from-to)17814-17823
    JournalOptics Express
    Volume21
    Issue number15
    DOIs
    Publication statusPublished - 29 Jul 2013
    MoE publication typeNot Eligible

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    platforms
    photonics
    waveguides
    silicon
    radii
    SOI (semiconductors)
    optical waveguides
    broadband

    Cite this

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    title = "Dramatic size reduction of waveguide bends on a micron-scale silicon photonic platform",
    abstract = "We demonstrate theoretically and experimentally how highly multimodal high index contrast waveguides with micron-scale cores can be bent, on an ultra-broad band of operation, with bending radii below 10 µm and losses for the fundamental mode below 0.02 dB/90°. The bends have been designed based on the Euler spiral and fabricated on 4 µm thick SOI. The proposed approach enabled also the realization of 180° bends with 1.27 µm effective radii and 0.09 dB loss, which are the smallest low-loss bends ever reported for an optical waveguide. These results pave the way for unprecedented integration density in most semiconductor platforms.",
    author = "Matteo Cherchi and Sami Ylinen and Mikko Harjanne and Markku Kapulainen and Timo Aalto",
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    Dramatic size reduction of waveguide bends on a micron-scale silicon photonic platform. / Cherchi, Matteo; Ylinen, Sami; Harjanne, Mikko; Kapulainen, Markku; Aalto, Timo.

    In: Optics Express, Vol. 21, No. 15, 29.07.2013, p. 17814-17823.

    Research output: Contribution to journalArticleScientificpeer-review

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    AU - Cherchi, Matteo

    AU - Ylinen, Sami

    AU - Harjanne, Mikko

    AU - Kapulainen, Markku

    AU - Aalto, Timo

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    AB - We demonstrate theoretically and experimentally how highly multimodal high index contrast waveguides with micron-scale cores can be bent, on an ultra-broad band of operation, with bending radii below 10 µm and losses for the fundamental mode below 0.02 dB/90°. The bends have been designed based on the Euler spiral and fabricated on 4 µm thick SOI. The proposed approach enabled also the realization of 180° bends with 1.27 µm effective radii and 0.09 dB loss, which are the smallest low-loss bends ever reported for an optical waveguide. These results pave the way for unprecedented integration density in most semiconductor platforms.

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