Erratum to: Kramers–kronig receivers: Erratum (Advances in Optics and Photonics)

We present in this erratum a supplement to the review of experimental implementations of the Kramers–Kronig receiver in Section 20 of our paper [Adv. Opt. Photon. 11, 480 (2019)] describing the work performed at Nokia Bell Labs, Germany. This addition does not affect to any extent the conclusions presented in the original paper. 1. KRAMERS–KRONIG RECEIVERS: ADDENDUM The following text should be included at the end of Section 20 of our review [1]. 20.21. Nokia Bell Labs Germany In Refs. [2] and [3] the authors show the most hardware-efficient implementation of the KK scheme (with a virtual carrier) as well as a careful implementation of the front-end correction before the KK processing. They also provide a comprehensive com-parison between KK reception and iterative SSBI cancellation. In Ref. [4] they report the highest data rate per channel for any demonstrated KK scheme (510 Gb/s and a net data rate of 432 Gb/s) and in Ref. [5] they demonstrate the highest baudrate of a KK scheme using a single DAC per I/Q component. Finally, in Ref. [6] they provide a reliable analytical performance estimation method for the KK scheme.