TY - GEN
T1 - Improvement of cross-talk of high-speed 2D photodetector array
AU - Kusakata, Ken
AU - Umezawa, Toshimasa
AU - Yamamoto, Naokatsu
AU - Kawanishi, Tetsuya
N1 - Funding Information:
The research work in this paper was partially supported by the Japanese government funding for “R&D to Expand Radio Frequency Resource” from the Ministry of Internal Affairs and Communications.
Publisher Copyright:
© 2019 SPIE.
PY - 2019
Y1 - 2019
N2 - 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.
AB - 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.
KW - 2-dimension photodetector arrays
KW - crosstalk
KW - high speed
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U2 - 10.1117/12.2507743
DO - 10.1117/12.2507743
M3 - Conference contribution
AN - SCOPUS:85062482367
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Broadband Access Communication Technologies XIII
A2 - Dingel, Benjamin B.
A2 - Mikroulis, Spiros
A2 - Tsukamoto, Katsutoshi
PB - SPIE
T2 - Broadband Access Communication Technologies XIII 2019
Y2 - 4 February 2019 through 5 February 2019
ER -