Design and fabrication of asymmetric Mach-Zehnder interferometers based on EpoClad and EpoCore strip waveguides

Integrated polymeric optical interferometers offer the possibility of developing sensors with low cost, scalability, and easy integration. Although they are not yet competitive with inorganic materials in terms of sensitivity, they have good biocompatibility in general, and suitable designs may prov...

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Main Authors: Magalhães Tiago E.C., Borme Jérôme, Douglas Temple, Maibohm Christian, Nieder Jana B.
Format: Article
Language:English
Published: EDP Sciences 2024-01-01
Series:EPJ Web of Conferences
Online Access:https://www.epj-conferences.org/articles/epjconf/pdf/2024/15/epjconf_aop2024_00028.pdf
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author Magalhães Tiago E.C.
Borme Jérôme
Douglas Temple
Maibohm Christian
Nieder Jana B.
author_facet Magalhães Tiago E.C.
Borme Jérôme
Douglas Temple
Maibohm Christian
Nieder Jana B.
author_sort Magalhães Tiago E.C.
collection DOAJ
description Integrated polymeric optical interferometers offer the possibility of developing sensors with low cost, scalability, and easy integration. Although they are not yet competitive with inorganic materials in terms of sensitivity, they have good biocompatibility in general, and suitable designs may provide sufficient sensitivity for biosensing. A new design for integrated Mach-Zehnder interferometers based on asymmetric arms with different widths has been proposed and experimentally demonstrated, avoiding the need for additional fabrication steps for an interaction window where biosamples are placed. The basic sensory principle is built upon the non-zero variation in the difference of the effective refractive index between the two arms due to their different dimensions, causing a phase variation in the output signal. In this work, we present a design optimization method and fabrication results by e-beam lithography for integrated asymmetric Mach-Zehnder interferometers based on strip waveguides made from EpoClad and EpoCore polymers. The operation wavelength was set to 650 nm. The optimization algorithm is based on open-source mode-solver simulations that return the optimal fabrication dimensions of the interferometer, avoiding high-order modes and enhancing single-mode confinement.
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institution OA Journals
issn 2100-014X
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publishDate 2024-01-01
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spelling doaj-art-9d2e38fd21c04a039354783cda3a6a152025-08-20T02:10:39ZengEDP SciencesEPJ Web of Conferences2100-014X2024-01-013050002810.1051/epjconf/202430500028epjconf_aop2024_00028Design and fabrication of asymmetric Mach-Zehnder interferometers based on EpoClad and EpoCore strip waveguidesMagalhães Tiago E.C.0Borme Jérôme1Douglas Temple2Maibohm Christian3Nieder Jana B.4INL International Iberian Nanotechnology LaboratoryINL International Iberian Nanotechnology LaboratoryINL International Iberian Nanotechnology LaboratoryINL International Iberian Nanotechnology LaboratoryINL International Iberian Nanotechnology LaboratoryIntegrated polymeric optical interferometers offer the possibility of developing sensors with low cost, scalability, and easy integration. Although they are not yet competitive with inorganic materials in terms of sensitivity, they have good biocompatibility in general, and suitable designs may provide sufficient sensitivity for biosensing. A new design for integrated Mach-Zehnder interferometers based on asymmetric arms with different widths has been proposed and experimentally demonstrated, avoiding the need for additional fabrication steps for an interaction window where biosamples are placed. The basic sensory principle is built upon the non-zero variation in the difference of the effective refractive index between the two arms due to their different dimensions, causing a phase variation in the output signal. In this work, we present a design optimization method and fabrication results by e-beam lithography for integrated asymmetric Mach-Zehnder interferometers based on strip waveguides made from EpoClad and EpoCore polymers. The operation wavelength was set to 650 nm. The optimization algorithm is based on open-source mode-solver simulations that return the optimal fabrication dimensions of the interferometer, avoiding high-order modes and enhancing single-mode confinement.https://www.epj-conferences.org/articles/epjconf/pdf/2024/15/epjconf_aop2024_00028.pdf
spellingShingle Magalhães Tiago E.C.
Borme Jérôme
Douglas Temple
Maibohm Christian
Nieder Jana B.
Design and fabrication of asymmetric Mach-Zehnder interferometers based on EpoClad and EpoCore strip waveguides
EPJ Web of Conferences
title Design and fabrication of asymmetric Mach-Zehnder interferometers based on EpoClad and EpoCore strip waveguides
title_full Design and fabrication of asymmetric Mach-Zehnder interferometers based on EpoClad and EpoCore strip waveguides
title_fullStr Design and fabrication of asymmetric Mach-Zehnder interferometers based on EpoClad and EpoCore strip waveguides
title_full_unstemmed Design and fabrication of asymmetric Mach-Zehnder interferometers based on EpoClad and EpoCore strip waveguides
title_short Design and fabrication of asymmetric Mach-Zehnder interferometers based on EpoClad and EpoCore strip waveguides
title_sort design and fabrication of asymmetric mach zehnder interferometers based on epoclad and epocore strip waveguides
url https://www.epj-conferences.org/articles/epjconf/pdf/2024/15/epjconf_aop2024_00028.pdf
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