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physics.optics2025
Spectro-temporal unitary transformations for coherent modulation: design trade-offs and practical considerations
Callum Deakin, Xi Chen
This paper analyzes the performance of spectro-temporal unitary transforms for coherent optical modulation. Unlike conventional IQ modulation, such transforms are based on a cascad…
physics.optics2025
314-GBaud Single-Wavelength Signaling Generated All-Electronically by a 158-GHz Digital-Band-Interleaved DAC
Di Che, Callum Deakin, Xi Chen
We demonstrate an all-electronic generation of 314-GBaud PS 8-ASK signals by a 158-GHz digital-band-interleaved DAC. The signals drive a thin-film LiNbO3 modulator that achieves ov…