We have proposed and developed array-antenna-electrode electro-optic (EO) LiNbO3 modulators to convert wireless millimeter-wave signals to optical signals. In particular, by introducing polarization-reversed structures in the LiNbO3 crystal/film of the device substrate, the advanced functions of discrimination between space-division-multiplexed (SDM) wireless signals and generation of optical single-sideband (SSB) modulation signals are obtainable. In this paper, newly developed EO modulators operating in the 60 GHz band are presented. Applications to up-links in fifth generation (5G) mobile communication systems are also discussed.
Conference Presentations are recordings of oral presentations given at SPIE conferences and published as part of the conference proceedings. They include the speaker's narration along with a video recording of the presentation slides and animations. Many conference presentations also include full-text papers. Search and browse our growing collection of more than 14,000 conference presentations, including many plenary and keynote presentations.