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SEMICONDUCTOR LASERS

Designs break bandwidth record

Nature Photonics volume 15, pages 4–5 (2021)Cite this article

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Two independent reports of directly modulated lasers with bandwidths of >60 GHz may help bring data rates beyond 200 Gb s–1 to low-cost optical communication systems. Key to the successes has been managing photonic feedback effects within the laser cavities.

High-speed optical transceivers are indispensable building blocks in our Internet era. A lot of effort is invested in the development of the laser transmitter components, where demands over cost, footprint, energy consumption and speed play increasingly important roles. In essence, devices should be as cheap, small, efficient and fast as possible.

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Fig. 1: Ultrafast directly modulated semiconductor lasers.

References

  1. Yamaoka, S. et al. Nat. Photon. https://doi.org/10.1038/s41566-020-00700-y (2020).

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  3. 802.3bs-2017 - IEEE Standard for Ethernet - Amendment 10: Media Access Control Parameters, Physical Layers, and Management Parameters for 200 Gb/s and 400 Gb/s Operation (IEEE, 2017).

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Authors and Affiliations

  1. Fraunhofer Heinrich-Hertz-Institute, Photonic Components, Berlin, Germany

    Ute Troppenz

  2. IHP, Technology/Si Photonics, Frankfurt (Oder), Germany

    Jochen Kreissl

Authors
  1. Ute Troppenz
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  2. Jochen Kreissl
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Correspondence to Ute Troppenz.

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The authors declare no competing interests

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Troppenz, U., Kreissl, J. Designs break bandwidth record. Nat. Photonics 15, 4–5 (2021). https://doi.org/10.1038/s41566-020-00739-x

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  • DOI: https://doi.org/10.1038/s41566-020-00739-x

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