Design of Spatial-Mode (De)Multiplexer for Few-Mode Fibers Based on a Cyclically Used Michelson-Like Interferometer
Few mode optical fibers are a promising way to continue increasing the data rate in optical communications. However, an efficient method to launch and extract separately each mode is essential. The design of a interferometric spatial mode (de)multiplexer for few mode optical fibers is presented. It...
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MDPI AG
2020-11-01
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author | Xesús Prieto-Blanco Carlos Montero-Orille Vicente Moreno de Las Cuevas María C. Nistal Dolores Mouriz Jesús Liñares |
author_facet | Xesús Prieto-Blanco Carlos Montero-Orille Vicente Moreno de Las Cuevas María C. Nistal Dolores Mouriz Jesús Liñares |
author_sort | Xesús Prieto-Blanco |
collection | DOAJ |
description | Few mode optical fibers are a promising way to continue increasing the data rate in optical communications. However, an efficient method to launch and extract separately each mode is essential. The design of a interferometric spatial mode (de)multiplexer for few mode optical fibers is presented. It is based on a single Michelson-like interferometer which consists of standard optical elements and has a reflective image inverter in one arm. Particular care has been taken in its design so that both polarizations behave the same. Moreover, this interferometer can process several pairs of modes simultaneously. The multiplexer also consists of: a phase plate, focusing optics at both ports of the interferometer and elliptical core fibers to recirculate some outputs. It can multiplex ten spatial and polarization modes and it presents low losses and no intrinsic crosstalk between modes. Additionally, it is polarization insensitive, achromatic, compact and inexpensive. The same system can work as a demultiplexer when used in reverse. In this case, both the losses and the crosstalk remain very low. Similar designs that perform other functions, like an add-drop mode multiplexing, are also suggested. |
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issn | 2076-3417 |
language | English |
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spelling | doaj.art-756d57999dcd49d388387fc3e2e47c082023-11-20T23:00:58ZengMDPI AGApplied Sciences2076-34172020-11-011023858410.3390/app10238584Design of Spatial-Mode (De)Multiplexer for Few-Mode Fibers Based on a Cyclically Used Michelson-Like InterferometerXesús Prieto-Blanco0Carlos Montero-Orille1Vicente Moreno de Las Cuevas2María C. Nistal3Dolores Mouriz4Jesús Liñares5Quantum Materials and Photonics Research Group, Department of Applied Physics, Faculty of Physics/Faculty of Optics and Optometry, Universidade de Santiago de Compostela, Campus Vida s/n, E-15782 Santiago de Compostela, Galicia, SpainQuantum Materials and Photonics Research Group, Department of Applied Physics, Faculty of Physics/Faculty of Optics and Optometry, Universidade de Santiago de Compostela, Campus Vida s/n, E-15782 Santiago de Compostela, Galicia, SpainQuantum Materials and Photonics Research Group, Department of Applied Physics, Faculty of Physics/Faculty of Optics and Optometry, Universidade de Santiago de Compostela, Campus Vida s/n, E-15782 Santiago de Compostela, Galicia, SpainQuantum Materials and Photonics Research Group, Department of Applied Physics, Faculty of Physics/Faculty of Optics and Optometry, Universidade de Santiago de Compostela, Campus Vida s/n, E-15782 Santiago de Compostela, Galicia, SpainQuantum Materials and Photonics Research Group, Department of Applied Physics, Faculty of Physics/Faculty of Optics and Optometry, Universidade de Santiago de Compostela, Campus Vida s/n, E-15782 Santiago de Compostela, Galicia, SpainQuantum Materials and Photonics Research Group, Department of Applied Physics, Faculty of Physics/Faculty of Optics and Optometry, Universidade de Santiago de Compostela, Campus Vida s/n, E-15782 Santiago de Compostela, Galicia, SpainFew mode optical fibers are a promising way to continue increasing the data rate in optical communications. However, an efficient method to launch and extract separately each mode is essential. The design of a interferometric spatial mode (de)multiplexer for few mode optical fibers is presented. It is based on a single Michelson-like interferometer which consists of standard optical elements and has a reflective image inverter in one arm. Particular care has been taken in its design so that both polarizations behave the same. Moreover, this interferometer can process several pairs of modes simultaneously. The multiplexer also consists of: a phase plate, focusing optics at both ports of the interferometer and elliptical core fibers to recirculate some outputs. It can multiplex ten spatial and polarization modes and it presents low losses and no intrinsic crosstalk between modes. Additionally, it is polarization insensitive, achromatic, compact and inexpensive. The same system can work as a demultiplexer when used in reverse. In this case, both the losses and the crosstalk remain very low. Similar designs that perform other functions, like an add-drop mode multiplexing, are also suggested.https://www.mdpi.com/2076-3417/10/23/8584optical fibersspace division multiplexingfew mode fibersmode sortinginterferometers |
spellingShingle | Xesús Prieto-Blanco Carlos Montero-Orille Vicente Moreno de Las Cuevas María C. Nistal Dolores Mouriz Jesús Liñares Design of Spatial-Mode (De)Multiplexer for Few-Mode Fibers Based on a Cyclically Used Michelson-Like Interferometer Applied Sciences optical fibers space division multiplexing few mode fibers mode sorting interferometers |
title | Design of Spatial-Mode (De)Multiplexer for Few-Mode Fibers Based on a Cyclically Used Michelson-Like Interferometer |
title_full | Design of Spatial-Mode (De)Multiplexer for Few-Mode Fibers Based on a Cyclically Used Michelson-Like Interferometer |
title_fullStr | Design of Spatial-Mode (De)Multiplexer for Few-Mode Fibers Based on a Cyclically Used Michelson-Like Interferometer |
title_full_unstemmed | Design of Spatial-Mode (De)Multiplexer for Few-Mode Fibers Based on a Cyclically Used Michelson-Like Interferometer |
title_short | Design of Spatial-Mode (De)Multiplexer for Few-Mode Fibers Based on a Cyclically Used Michelson-Like Interferometer |
title_sort | design of spatial mode de multiplexer for few mode fibers based on a cyclically used michelson like interferometer |
topic | optical fibers space division multiplexing few mode fibers mode sorting interferometers |
url | https://www.mdpi.com/2076-3417/10/23/8584 |
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