Single-Pixel Imaging Using Carrier-Depletion Optical Phased Array With Reduced Phase Shift Requirement

DOI PDF 被引用文献4件 参考文献44件 オープンアクセス

書誌事項

公開日
2021-10
資源種別
journal article
権利情報
  • https://creativecommons.org/licenses/by/4.0/legalcode
DOI
  • 10.1109/jphot.2021.3113925
公開者
Institute of Electrical and Electronics Engineers (IEEE)

説明

The optical-phased array (OPA) has gained special interest in recent years as a high-speed and compact imaging device. While large-scale OPAs have been demonstrated in single-pixel imaging, the complexity of the driver circuit is becoming a crucial problem as the number of phase shifters increases. Here, we investigate the phase shift requirement of OPA for single-pixel imaging and demonstrate, for the first time, that full 2π phase shifts are not mandatory to generate a set of illumination patterns with a sufficient degree of randomness required to reconstruct the image. Using a silicon photonic OPA chip with 128 carrier-depletion-based phase shifters, we experimentally confirm this property by successfully retrieving an image under a maximum phase shift of only ∼1.5π without affecting the quality of the image. Consequently, the input voltage can be reduced significantly. Since the carrier-depletion phase shifters generally require high driving voltages, this finding paves the way to high-speed OPA-based imaging with a minimum device requirement.

収録刊行物

  • IEEE Photonics Journal

    IEEE Photonics Journal 13 (5), 1-5, 2021-10

    Institute of Electrical and Electronics Engineers (IEEE)

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