Compact thermo-optic MZI switch in silicon-on-insulator using direct carrier injection

Manuel Mendez Astudillo, Masaki Okamoto, Yoshiaki Ito, Tomohiro Kita

    Research output: Contribution to journalArticle

    6 Citations (Scopus)


    In this paper we present a compact direct current injection thermo-optic switch based on a Mach-Zehnder Interferometer configuration that is suitable for autonomous vehicle applications as it has a low heating resistance value of 97 Ω, a rapid 2.16 μs switching time constant, and a Pπ of 28 mW. The device relies on multimode interference to achieve low optical insertion losses of less than 1.1 dB per device, while allowing direct current injection to heat the waveguide and achieve fast operation speeds. Furthermore, the total resistive value can be tailored as the heating elements are placed in parallel.

    Original languageEnglish
    Pages (from-to)899-906
    Number of pages8
    JournalOptics Express
    Issue number2
    Publication statusPublished - 2019 Jan 21


    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

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