Improvement of cross-talk of high-speed 2D photodetector array

Ken Kusakata, Toshimasa Umezawa, Naokatsu Yamamoto, Tetsuya Kawanishi

研究成果: Conference contribution


We designed and fabricated a high-bandwidth, 32-pixel, two-dimensional photodetector array (2D-PDA) for receiving transmission signals from multi-core and few-mode fibers. Pixel sizes of 10, 20, and 30 μm were employed, with a pixel gap of 14 μm. We obtained 3 dB bandwidths of 23.8∼29.8 GHz, 19.1∼20.8 GHz, and 9.0∼13.7 GHz for pixel sizes of 10, 20, and 30 μm, respectively. The device exhibited increasing noise due to RF crosstalk, which was caused by neighboring wires or pixels. In this study, we explored different pixel arrangements to reduce the crosstalk between neighboring pixels, and confirmed the frequency characteristics of the 2D-PDA pixels. Moreover, using electromagnetic simulation software, the RF crosstalk of -30 dB between neighboring pixels was confirmed up to the 10-20 GHz range. The crosstalk analysis, crosstalk reduction design in 2D-PDA devices, and its experimental results are displayed and discussed.

ホスト出版物のタイトルBroadband Access Communication Technologies XIII
編集者Benjamin B. Dingel, Spiros Mikroulis, Katsutoshi Tsukamoto
出版ステータスPublished - 2019
イベントBroadband Access Communication Technologies XIII 2019 - San Francisco, United States
継続期間: 2019 2 42019 2 5


名前Proceedings of SPIE - The International Society for Optical Engineering


ConferenceBroadband Access Communication Technologies XIII 2019
CountryUnited States
CitySan Francisco

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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