Strategies for improved temporal response of glass-based optical switches

We present an optimization of the dynamics of integrated optical switches based on thermal phase shifters. These devices have been fabricated in the volume of glass substrates by femtosecond laser micromachining and are constituted by an integrated Mach–Zehnder interferometer and a superficial heate...

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Autores principales: Calvarese, Matteo, Paiè, Petra, Ceccarelli, Francesco, Sala, Federico, Bassi, Andrea, Osellame, Roberto, Bragheri, Francesca
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8742015/
https://www.ncbi.nlm.nih.gov/pubmed/34997131
http://dx.doi.org/10.1038/s41598-021-04218-3
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author Calvarese, Matteo
Paiè, Petra
Ceccarelli, Francesco
Sala, Federico
Bassi, Andrea
Osellame, Roberto
Bragheri, Francesca
author_facet Calvarese, Matteo
Paiè, Petra
Ceccarelli, Francesco
Sala, Federico
Bassi, Andrea
Osellame, Roberto
Bragheri, Francesca
author_sort Calvarese, Matteo
collection PubMed
description We present an optimization of the dynamics of integrated optical switches based on thermal phase shifters. These devices have been fabricated in the volume of glass substrates by femtosecond laser micromachining and are constituted by an integrated Mach–Zehnder interferometer and a superficial heater. Simulations, surface micromachining and innovative layouts allowed us to improve the temporal response of the optical switches down to a few milliseconds. In addition, taking advantage of an electrical pulse shaping approach where an optimized voltage signal is applied to the heater, we proved a switching time as low as 78 µs, about two orders of magnitude shorter with respect to the current state of the art of thermally-actuated optical switches in glass.
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spelling pubmed-87420152022-01-11 Strategies for improved temporal response of glass-based optical switches Calvarese, Matteo Paiè, Petra Ceccarelli, Francesco Sala, Federico Bassi, Andrea Osellame, Roberto Bragheri, Francesca Sci Rep Article We present an optimization of the dynamics of integrated optical switches based on thermal phase shifters. These devices have been fabricated in the volume of glass substrates by femtosecond laser micromachining and are constituted by an integrated Mach–Zehnder interferometer and a superficial heater. Simulations, surface micromachining and innovative layouts allowed us to improve the temporal response of the optical switches down to a few milliseconds. In addition, taking advantage of an electrical pulse shaping approach where an optimized voltage signal is applied to the heater, we proved a switching time as low as 78 µs, about two orders of magnitude shorter with respect to the current state of the art of thermally-actuated optical switches in glass. Nature Publishing Group UK 2022-01-07 /pmc/articles/PMC8742015/ /pubmed/34997131 http://dx.doi.org/10.1038/s41598-021-04218-3 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Calvarese, Matteo
Paiè, Petra
Ceccarelli, Francesco
Sala, Federico
Bassi, Andrea
Osellame, Roberto
Bragheri, Francesca
Strategies for improved temporal response of glass-based optical switches
title Strategies for improved temporal response of glass-based optical switches
title_full Strategies for improved temporal response of glass-based optical switches
title_fullStr Strategies for improved temporal response of glass-based optical switches
title_full_unstemmed Strategies for improved temporal response of glass-based optical switches
title_short Strategies for improved temporal response of glass-based optical switches
title_sort strategies for improved temporal response of glass-based optical switches
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8742015/
https://www.ncbi.nlm.nih.gov/pubmed/34997131
http://dx.doi.org/10.1038/s41598-021-04218-3
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