Verified equivalent-circuit model for slot-waveguide modulators

Heiner Zwickel, Stefan Singer, Clemens Kieninger, Yasar Kutuvantavida, Narek Muradyan, Thorsten Wahlbrink, Shiyoshi Yokoyama, Sebastian Randel, Wolfgang Freude, Christian Koos

Research output: Contribution to journalArticle

Abstract

We formulate and experimentally validate an equivalent-circuit model based on distributed elements to describe the electric and electro-optic (EO) properties of travelling-wave silicon-organic hybrid (SOH) slot-waveguide modulators. The model allows to reliably predict the small-signal EO frequency response of the modulators exploiting purely electrical measurements of the frequency-dependent RF transmission characteristics. We experimentally verify the validity of our model, and we formulate design guidelines for an optimum trade-off between optical loss due to free-carrier absorption (FCA), electro-optic bandwidth, and π-voltage of SOH slot-waveguide modulators.

Original languageEnglish
Pages (from-to)12951-12976
Number of pages26
JournalOptics Express
Volume28
Issue number9
DOIs
Publication statusPublished - Apr 27 2020

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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  • Cite this

    Zwickel, H., Singer, S., Kieninger, C., Kutuvantavida, Y., Muradyan, N., Wahlbrink, T., Yokoyama, S., Randel, S., Freude, W., & Koos, C. (2020). Verified equivalent-circuit model for slot-waveguide modulators. Optics Express, 28(9), 12951-12976. https://doi.org/10.1364/OE.383120