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220-GBd optical coherent waveform generation using temporal unitary transforms

Callum Deakin, Xi Chen, Di Che

arXiv:2606.17226Published June 15, 2026Updated June 17, 20260 citations
  • physics.optics
  • eess.SP

Abstract

We use temporal unitary transforms to generate 16-QAM up to 220 GBd using only 50-GHz electrical bandwidth. The technique is theoretically lossless and can generate arbitrary optical waveforms beyond the bandwidth of the constituent modulators.

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