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Frequency Response of Thermo-Optic Phase Modulators Based on Fluorinated Polyimide Polymer Waveguide

Polymer waveguide phase modulators exhibit stable low-power phase modulation owing to their exceptional thermal confinement and high thermo-optic effect, and thus, have the merit of thermal isolation between channels, which is crucial for an optical phased array (OPA) beam scanner device. In this wo...

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Detalles Bibliográficos
Autores principales: Lee, Eun-Su, Chun, Kwon-Wook, Jin, Jinung, Oh, Min-Cheol
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9182701/
https://www.ncbi.nlm.nih.gov/pubmed/35683859
http://dx.doi.org/10.3390/polym14112186
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author Lee, Eun-Su
Chun, Kwon-Wook
Jin, Jinung
Oh, Min-Cheol
author_facet Lee, Eun-Su
Chun, Kwon-Wook
Jin, Jinung
Oh, Min-Cheol
author_sort Lee, Eun-Su
collection PubMed
description Polymer waveguide phase modulators exhibit stable low-power phase modulation owing to their exceptional thermal confinement and high thermo-optic effect, and thus, have the merit of thermal isolation between channels, which is crucial for an optical phased array (OPA) beam scanner device. In this work, a waveguide phase modulator was designed and fabricated based on a high-refractive-index fluorinated polyimide. The propagation loss of the polyimide waveguide and the temporal response of the phase modulator were characterized. Moreover, the transfer function of the phase modulator including multiple poles and zeros was obtained from the measured frequency response. The polyimide waveguide modulator device demonstrated a fast response time of 117 μs for 1 kHz input signal, however, for 1 mHz step-function input, it exhibited an additional 5% phase change in 5 s.
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spelling pubmed-91827012022-06-10 Frequency Response of Thermo-Optic Phase Modulators Based on Fluorinated Polyimide Polymer Waveguide Lee, Eun-Su Chun, Kwon-Wook Jin, Jinung Oh, Min-Cheol Polymers (Basel) Article Polymer waveguide phase modulators exhibit stable low-power phase modulation owing to their exceptional thermal confinement and high thermo-optic effect, and thus, have the merit of thermal isolation between channels, which is crucial for an optical phased array (OPA) beam scanner device. In this work, a waveguide phase modulator was designed and fabricated based on a high-refractive-index fluorinated polyimide. The propagation loss of the polyimide waveguide and the temporal response of the phase modulator were characterized. Moreover, the transfer function of the phase modulator including multiple poles and zeros was obtained from the measured frequency response. The polyimide waveguide modulator device demonstrated a fast response time of 117 μs for 1 kHz input signal, however, for 1 mHz step-function input, it exhibited an additional 5% phase change in 5 s. MDPI 2022-05-27 /pmc/articles/PMC9182701/ /pubmed/35683859 http://dx.doi.org/10.3390/polym14112186 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Lee, Eun-Su
Chun, Kwon-Wook
Jin, Jinung
Oh, Min-Cheol
Frequency Response of Thermo-Optic Phase Modulators Based on Fluorinated Polyimide Polymer Waveguide
title Frequency Response of Thermo-Optic Phase Modulators Based on Fluorinated Polyimide Polymer Waveguide
title_full Frequency Response of Thermo-Optic Phase Modulators Based on Fluorinated Polyimide Polymer Waveguide
title_fullStr Frequency Response of Thermo-Optic Phase Modulators Based on Fluorinated Polyimide Polymer Waveguide
title_full_unstemmed Frequency Response of Thermo-Optic Phase Modulators Based on Fluorinated Polyimide Polymer Waveguide
title_short Frequency Response of Thermo-Optic Phase Modulators Based on Fluorinated Polyimide Polymer Waveguide
title_sort frequency response of thermo-optic phase modulators based on fluorinated polyimide polymer waveguide
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9182701/
https://www.ncbi.nlm.nih.gov/pubmed/35683859
http://dx.doi.org/10.3390/polym14112186
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