Performance limits of spectro-temporal unitary transformations for coherent modulation

TL;DR

This paper investigates the performance boundaries of lossless unitary transformations in coherent modulation, showing they can surpass traditional IQ modulators in signal quality at similar power levels.

Contribution

It provides a theoretical analysis of the limits of spectro-temporal unitary transformations for coherent modulation, highlighting their potential advantages over conventional methods.

Findings

Achieve >30 dB SINAD with lossless transformations.

Outperform conventional IQ modulators at similar laser power levels.

Establish performance bounds for spectro-temporal unitary transformations.

Abstract

We analyse the performance limits of coherent modulation based on lossless unitary transformations, demonstrating that they can achieve high ($>$30~dB) SINAD and outperform conventional IQ modulators at equivalent transmitter laser powers.