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Photonic integration based on a ferroelectric thin-film platform

Photonic-integrated circuits (PICs) using ferroelectric materials are expected to be used in many applications because of its unique optical properties such as large electro-optic coefficients. In this study, a novel PIC based on a ferroelectric thin-film platform was designed and fabricated, where...

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Autores principales: Abe, Shunsuke, Joichi, Tomoki, Uekusa, Kouichiro, Hara, Hideo, Masuda, Shin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6851366/
https://www.ncbi.nlm.nih.gov/pubmed/31719594
http://dx.doi.org/10.1038/s41598-019-52895-y
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author Abe, Shunsuke
Joichi, Tomoki
Uekusa, Kouichiro
Hara, Hideo
Masuda, Shin
author_facet Abe, Shunsuke
Joichi, Tomoki
Uekusa, Kouichiro
Hara, Hideo
Masuda, Shin
author_sort Abe, Shunsuke
collection PubMed
description Photonic-integrated circuits (PICs) using ferroelectric materials are expected to be used in many applications because of its unique optical properties such as large electro-optic coefficients. In this study, a novel PIC based on a ferroelectric thin-film platform was designed and fabricated, where high-speed optical modulator, spot-size converters (SSCs), and a variable optical attenuator (VOA) were successfully integrated. A ferroelectric lanthanum-modified lead zirconate titanate (PLZT) thin film was epitaxially-grown by using a modified sol-gel method, and it exhibits large electro-optic coefficients (>120 pm/V) and low propagation loss (1.1 dB/cm). The optical modulator, a Mach-Zehnder type, exhibited a half-wave voltage (V(π)) of 6.0 V (V(π)L = 4.5 Vcm()) and optical modulation up to 56 Gb/s. Also, the VOA (with attenuation range of more than 26 dB) was successfully integrated with the modulator. As a result, it is concluded that the developed ferroelectric platform can pave the way for photonic integration.
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spelling pubmed-68513662019-11-19 Photonic integration based on a ferroelectric thin-film platform Abe, Shunsuke Joichi, Tomoki Uekusa, Kouichiro Hara, Hideo Masuda, Shin Sci Rep Article Photonic-integrated circuits (PICs) using ferroelectric materials are expected to be used in many applications because of its unique optical properties such as large electro-optic coefficients. In this study, a novel PIC based on a ferroelectric thin-film platform was designed and fabricated, where high-speed optical modulator, spot-size converters (SSCs), and a variable optical attenuator (VOA) were successfully integrated. A ferroelectric lanthanum-modified lead zirconate titanate (PLZT) thin film was epitaxially-grown by using a modified sol-gel method, and it exhibits large electro-optic coefficients (>120 pm/V) and low propagation loss (1.1 dB/cm). The optical modulator, a Mach-Zehnder type, exhibited a half-wave voltage (V(π)) of 6.0 V (V(π)L = 4.5 Vcm()) and optical modulation up to 56 Gb/s. Also, the VOA (with attenuation range of more than 26 dB) was successfully integrated with the modulator. As a result, it is concluded that the developed ferroelectric platform can pave the way for photonic integration. Nature Publishing Group UK 2019-11-12 /pmc/articles/PMC6851366/ /pubmed/31719594 http://dx.doi.org/10.1038/s41598-019-52895-y Text en © The Author(s) 2019 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Abe, Shunsuke
Joichi, Tomoki
Uekusa, Kouichiro
Hara, Hideo
Masuda, Shin
Photonic integration based on a ferroelectric thin-film platform
title Photonic integration based on a ferroelectric thin-film platform
title_full Photonic integration based on a ferroelectric thin-film platform
title_fullStr Photonic integration based on a ferroelectric thin-film platform
title_full_unstemmed Photonic integration based on a ferroelectric thin-film platform
title_short Photonic integration based on a ferroelectric thin-film platform
title_sort photonic integration based on a ferroelectric thin-film platform
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6851366/
https://www.ncbi.nlm.nih.gov/pubmed/31719594
http://dx.doi.org/10.1038/s41598-019-52895-y
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