3 papers
physics.optics2025
Optical arbitrary waveform generation using spectro-temporal unitary transforms
Callum Deakin
We discuss the prospect of using cascaded phase modulators and dispersive elements to achieve arbitrary optical waveform generation. This transform is not limited by the bandwidth…
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…
eess.SP2024
Performance limits of spectro-temporal unitary transformations for coherent modulation
Callum Deakin, Xi Chen
We analyse the performance limits of coherent modulation based on lossless unitary transformations, demonstrating that they can achieve high (30~dB) SINAD and outperform convent…