Asymmetric dual-core liquid crystal channel-based tunable mode converter
Abstract In this work, a higher order-to-fundamental mode converter is reported and analyzed based on an asymmetric dual channel waveguide (ADC-WG) on silicon. In the reported structure, one of the two waveguides is infiltrated with nematic liquid crystal (NLC) material to add temperature tunability...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-03-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-024-55609-1 |
| _version_ | 1797274593558265856 |
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| author | Mohamed Saleh Mohamed Esmail Mohamed Farhat O. Hameed Salah S. A. Obayya B. M. Younis |
| author_facet | Mohamed Saleh Mohamed Esmail Mohamed Farhat O. Hameed Salah S. A. Obayya B. M. Younis |
| author_sort | Mohamed Saleh Mohamed Esmail |
| collection | DOAJ |
| description | Abstract In this work, a higher order-to-fundamental mode converter is reported and analyzed based on an asymmetric dual channel waveguide (ADC-WG) on silicon. In the reported structure, one of the two waveguides is infiltrated with nematic liquid crystal (NLC) material to add temperature tunability while the other one is a solid BK7 waveguide. The modal characteristics are obtained using the full vectorial finite difference method (FVFDM). In addition, the structural parameters and optical characteristics of the employed materials are investigated to achieve good wavelength selectivity with a short device length (LD). Thus, a compact mode converter that can work at different wavelengths including the telecommunication wavelength i.e., 1.55 μm with LD ~ 482.31 μm and a low crosstalk of − 19.86 dB is presented. To prove the thermal tunability of the suggested mode converter, its operation is tested through a temperature range between 20 and 35 °C and the results show that the mode conversion process is achieved at each temperature with different phase matching wavelengths (λPMW) but with quite similar coupling length (LC). The proposed device can therefore be effectively utilized in integrated photonic circuits. |
| first_indexed | 2024-03-07T15:01:33Z |
| format | Article |
| id | doaj.art-9a58a3fd0801426fb14c4bedea78bc21 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-07T15:01:33Z |
| publishDate | 2024-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-9a58a3fd0801426fb14c4bedea78bc212024-03-05T19:08:58ZengNature PortfolioScientific Reports2045-23222024-03-0114111210.1038/s41598-024-55609-1Asymmetric dual-core liquid crystal channel-based tunable mode converterMohamed Saleh Mohamed Esmail0Mohamed Farhat O. Hameed1Salah S. A. Obayya2B. M. Younis3Basic Science Department, Faculty of Engineering, Misr University for Science and TechnologyCenter for Nanotechnology, Zewail City of Science, Technology and InnovationCentre for Photonics and Smart Materials, Zewail City of Science, Technology and InnovationCentre for Photonics and Smart Materials, Zewail City of Science, Technology and InnovationAbstract In this work, a higher order-to-fundamental mode converter is reported and analyzed based on an asymmetric dual channel waveguide (ADC-WG) on silicon. In the reported structure, one of the two waveguides is infiltrated with nematic liquid crystal (NLC) material to add temperature tunability while the other one is a solid BK7 waveguide. The modal characteristics are obtained using the full vectorial finite difference method (FVFDM). In addition, the structural parameters and optical characteristics of the employed materials are investigated to achieve good wavelength selectivity with a short device length (LD). Thus, a compact mode converter that can work at different wavelengths including the telecommunication wavelength i.e., 1.55 μm with LD ~ 482.31 μm and a low crosstalk of − 19.86 dB is presented. To prove the thermal tunability of the suggested mode converter, its operation is tested through a temperature range between 20 and 35 °C and the results show that the mode conversion process is achieved at each temperature with different phase matching wavelengths (λPMW) but with quite similar coupling length (LC). The proposed device can therefore be effectively utilized in integrated photonic circuits.https://doi.org/10.1038/s41598-024-55609-1 |
| spellingShingle | Mohamed Saleh Mohamed Esmail Mohamed Farhat O. Hameed Salah S. A. Obayya B. M. Younis Asymmetric dual-core liquid crystal channel-based tunable mode converter Scientific Reports |
| title | Asymmetric dual-core liquid crystal channel-based tunable mode converter |
| title_full | Asymmetric dual-core liquid crystal channel-based tunable mode converter |
| title_fullStr | Asymmetric dual-core liquid crystal channel-based tunable mode converter |
| title_full_unstemmed | Asymmetric dual-core liquid crystal channel-based tunable mode converter |
| title_short | Asymmetric dual-core liquid crystal channel-based tunable mode converter |
| title_sort | asymmetric dual core liquid crystal channel based tunable mode converter |
| url | https://doi.org/10.1038/s41598-024-55609-1 |
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