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Verified equivalent-circuit model for slot-waveguide modulators

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

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.

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Verlagsausgabe §
DOI: 10.5445/IR/1000124919
Veröffentlicht am 20.10.2020
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Institut für Photonik und Quantenelektronik (IPQ)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 04.2020
Sprache Englisch
Identifikator ISSN: 1094-4087
KITopen-ID: 1000124919
Erschienen in Optics express
Band 28
Heft 9
Seiten 12951-12976
Vorab online veröffentlicht am 16.04.2020
Nachgewiesen in Scopus
Web of Science
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