The temporal analogue of diffractive couplers

TL;DR

This paper demonstrates how temporal dispersion grating couplers, optimized via genetic algorithms, can generate multiple equal-amplitude pulse replicas from a single input, leveraging space-time duality in light.

Contribution

It introduces a novel approach to designing temporal gratings for pulse replication using genetic algorithms, considering practical bandwidth constraints.

Findings

Successful numerical demonstration of pulse array generation

Optimization of phase profile via genetic algorithm

Consideration of optoelectronic bandwidth limitations

Abstract

Based on the space-time duality of light, we numerically demonstrate that temporal dispersion grating couplers can generate from a single pulse an array of replicas of equal amplitude. The phase-only profile of the temporal grating is optimized by a genetic algorithm that takes into account the optoelectronic bandwidth limitations of the setup.