Definition: In the context of the hardware, cross-talk can also be applied in the context of physical measurement of light, where a direct measurement between a single source and detector can be contaminated by other sources of light. This is usually mitigated by the use of time multiplexing or frequency multiplexing. When utilizing silicon photomultipliers for photodetection, optical cross-talk may occur when an incident photon hits a microcell. This initial discharge can cause additional discharges in adjacent microcells, leading to an undesired amplification of the signal output.

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Synonym: Signal crosstalk


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