Spatio-temporal coherent molding and retrieval of pulsed signals in optical waveguides
Abstract
Optical waveguides are key elements for high fidelity, long distance optical communications. Coupled waveguide arrays allow for higher information density, steerting the propagation direction, and for encoding information. However, due to the mixing of relative phases for short pulses containing multiple waveguide-mode frequencies, a process for retrieving an encoded input state once these signals undergo coherent propagation remains elusive. A concept is presented to extract with high fidelity the phase-encrypted input signal from spatio-temporal propagated states. As a realization, an array of coupled waveguides is suggested with the retrieval mechanism being realized by local phase shifts that comply with the identified retrieval concept. Three dimensional full-wave electromagnetic simulations for broadband optical signals in coupled dielectric waveguides confirm the validity of the scheme and the high fidelity of information retrieval pointing to potential applications, for instance in ultrafast coherent coding and decoding of information imprinted on pulse sequences.
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BibTeX
@misc{durishvili2026spatiotemporal,
title = {{Spatio-temporal coherent molding and retrieval of pulsed signals in optical waveguides}},
author = {Nika Durishvili and Ramaz Khomeriki and Vakhtang Jandieri and Douglas H. Werner and Daniel Erni and Jamal Berakdar},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.00856},
eprint = {2609.00856},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.00856},
}
RIS
TY - UNPB
TI - Spatio-temporal coherent molding and retrieval of pulsed signals in optical waveguides
AU - Nika Durishvili
AU - Ramaz Khomeriki
AU - Vakhtang Jandieri
AU - Douglas H. Werner
AU - Daniel Erni
AU - Jamal Berakdar
PY - 2026
DA - 2026/09/01
PB - arXiv
DO - 10.48550/arxiv.2609.00856
UR - https://arxiv.org/abs/2609.00856
AB - Optical waveguides are key elements for high fidelity, long distance optical communications. Coupled waveguide arrays allow for higher information density, steerting the propagation direction, and for encoding information. However, due to the mixing of relative phases for short pulses containing multiple waveguide-mode frequencies, a process for retrieving an encoded input state once these signals undergo coherent propagation remains elusive. A concept is presented to extract with high fidelity the phase-encrypted input signal from spatio-temporal propagated states. As a realization, an array of coupled waveguides is suggested with the retrieval mechanism being realized by local phase shifts that comply with the identified retrieval concept. Three dimensional full-wave electromagnetic simulations for broadband optical signals in coupled dielectric waveguides confirm the validity of the scheme and the high fidelity of information retrieval pointing to potential applications, for instance in ultrafast coherent coding and decoding of information imprinted on pulse sequences.
ER -