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Ultrafast on-chip germanium photodiode

The demonstration of a germanium-based photodiode with a 3 dB bandwidth of 265 GHz and compatibility with silicon photonics and CMOS fabrication offers a cost-effective route to faster channel data rates for optical communications.

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Fig. 1: Cross-sectional view and frequency response of the photodiode reported by Lischke et al.

Adapted with permission from ref. 6, Springer Nature Ltd.


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Correspondence to Léopold Virot.

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Virot, L. Ultrafast on-chip germanium photodiode. Nat. Photon. 15, 868–869 (2021).

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