A 3 Gb/s optical detector in standard CMOS for 850 nm optical communication

S. Radovanovic, Anne J. Annema, Bram Nauta

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    Abstract

    This paper presents a monolithic optical detector, consisting of an integrated photodiode and a preamplifier in a standard 0.18-μm CMOS technology. A data rate of 3 Gb/s at BER <10-11 was achieved for λ=850 nm with 25-μW peak-peak optical power. This data rate is more than four times than that of current state-of-the-art optical detectors in standard CMOS reported so far. High-speed operation is achieved without reducing circuit responsivity by using an inherently robust analog equalizer that compensates (in gain and phase) for the photodiode roll-off over more than three decades. The presented solution is applicable to various photodiode structures, wavelengths, and CMOS generations.
    Original languageEnglish
    Pages (from-to)1706-1717
    Number of pages12
    JournalIEEE journal of solid-state circuits
    Volume40
    Issue number8
    DOIs
    Publication statusPublished - Aug 2005

    Keywords

    • Data-communication
    • photodiodes
    • equalizers
    • optical communication
    • CMOS analog integrated circuits
    • METIS-224203
    • EWI-14502
    • robustness issues
    • IR-52582
    • optical receivers

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