Abstract

Crosstalk between single-photon avalanche diodes (SPADs) fabricated by the standard CMOS process is extensively investigated. The dependence of device structure, device-to-device distance, and bias voltage on crosstalk has been experimentally studied. Our work reveals that direct-path optical crosstalk dominates in these CMOS SPADs, which is also confirmed with the first time-correlated crosstalk measurement. This work is valuable for SPAD array design and optimization in CMOS technology.

© 2017 IEEE

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