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

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 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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