Design, Modelling and Characterization of a 3-Vppd 90-GBaud Over-110-GHz-Bandwidth Linear Driver in 0.5-μm InP DHBTs for Optical Communications

R. Hersent, Tom K. Johansen, V. Nodjiadjim, F. Jorge, B. Duval, F. Blache, M. Riet, C. Mismer, A. Konczykowska

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    Abstract

    In this article, we present the modelling, design and characterization of a 3-Vppd linear-output-swing 90-GBd PAM-4 modulator driver, realised in III-V Lab's in-house 0.5-μm InP DHBT technology (380/520-GHz ${f_{T}/f_{{\max}}}$, 4.2-V ${BV_{\text{CE0}}}$). The driver exhibits 13-dB equalisation capabilities at 95 GHz with a bandwidth well beyond 110 GHz. It features a 0.67-W power consumption, resulting in a 1.5-GBd FoM with good output signal quality. To the best of our knowledge this linear driver shows the highest >64 GBd PAM-4 performance in current state-of-the-art, without DSP nor pre-emphasis. We also report on a newly developed 0.5-μm InP DHBT technology and its modelling using small-value external parasitic EM-simulation extraction, showing improved high-frequency prediction accuracy at circuit level.
    Original languageEnglish
    Title of host publicationProceedings of 2021 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium
    PublisherIEEE
    Publication date8 Dec 2021
    Pages1-4
    Article number9682463
    ISBN (Print)978-1-6654-3991-6
    DOIs
    Publication statusPublished - 8 Dec 2021
    Event2021 IEEE BiCMOS and Compound Semiconductor Integrated - Marriott Monterey, Monterey , United States
    Duration: 5 Dec 20218 Dec 2021

    Conference

    Conference2021 IEEE BiCMOS and Compound Semiconductor Integrated
    LocationMarriott Monterey
    Country/TerritoryUnited States
    CityMonterey
    Period05/12/202108/12/2021

    Keywords

    • Power demand
    • Optical design
    • DH-HEMTs
    • Predictive models
    • Optical fiber communication
    • Optical modulation
    • Integrated circuit modeling

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