A fixed phase tunable directional coupler based on coupling tuning
Abstract The field of photonic integrated circuits has witnessed significant progress in recent years, with a growing demand for devices that offer high-performance reconfigurability. Due to the inability of conventional tunable directional couplers (TDCs) to maintain a fixed phase while tuning the...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-10-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-024-74135-8 |
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| author | Yang Yang Tim Weiss Hamed Arianfard Akram Youssry Alberto Peruzzo |
| author_facet | Yang Yang Tim Weiss Hamed Arianfard Akram Youssry Alberto Peruzzo |
| author_sort | Yang Yang |
| collection | DOAJ |
| description | Abstract The field of photonic integrated circuits has witnessed significant progress in recent years, with a growing demand for devices that offer high-performance reconfigurability. Due to the inability of conventional tunable directional couplers (TDCs) to maintain a fixed phase while tuning the reflectivity, Mach-Zehnder interferometers (MZIs) are employed as the primary building blocks for reflectivity tuning in constructing large-scale circuits. However, MZIs are prone to fabrication errors due to the need for perfect balanced directional couplers to achieve 0-1 reflectivity, which hinders their scalability. In this study, we introduce a design of a TDC based on coupling constant tuning in the thin film Lithium Niobate platform and present an optimized design. Our optimized TDC design enables arbitrary reflectivity tuning while ensuring a consistent phase across a wide range of operating wavelengths. Furthermore, it exhibits fewer bending sections than MZIs and is inherently resilient to fabrication errors in waveguide geometry and coupling length compared to both MZIs and conventional TDCs. Our work contributes to developing high-performance photonic integrated circuits with implications for various fields, including optical communication systems and quantum information processing. |
| format | Article |
| id | doaj-art-6f7c671a578248ba986db4eb8a013da9 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-6f7c671a578248ba986db4eb8a013da92024-12-08T12:31:05ZengNature PortfolioScientific Reports2045-23222024-10-011411910.1038/s41598-024-74135-8A fixed phase tunable directional coupler based on coupling tuningYang Yang0Tim Weiss1Hamed Arianfard2Akram Youssry3Alberto Peruzzo4Quantum Photonics Laboratory, Centre for Quantum Computation and Communication Technology, RMIT UniversityQuantum Photonics Laboratory, Centre for Quantum Computation and Communication Technology, RMIT UniversityQuantum Photonics Laboratory, Centre for Quantum Computation and Communication Technology, RMIT UniversityQuantum Photonics Laboratory, Centre for Quantum Computation and Communication Technology, RMIT UniversityQuantum Photonics Laboratory, Centre for Quantum Computation and Communication Technology, RMIT UniversityAbstract The field of photonic integrated circuits has witnessed significant progress in recent years, with a growing demand for devices that offer high-performance reconfigurability. Due to the inability of conventional tunable directional couplers (TDCs) to maintain a fixed phase while tuning the reflectivity, Mach-Zehnder interferometers (MZIs) are employed as the primary building blocks for reflectivity tuning in constructing large-scale circuits. However, MZIs are prone to fabrication errors due to the need for perfect balanced directional couplers to achieve 0-1 reflectivity, which hinders their scalability. In this study, we introduce a design of a TDC based on coupling constant tuning in the thin film Lithium Niobate platform and present an optimized design. Our optimized TDC design enables arbitrary reflectivity tuning while ensuring a consistent phase across a wide range of operating wavelengths. Furthermore, it exhibits fewer bending sections than MZIs and is inherently resilient to fabrication errors in waveguide geometry and coupling length compared to both MZIs and conventional TDCs. Our work contributes to developing high-performance photonic integrated circuits with implications for various fields, including optical communication systems and quantum information processing.https://doi.org/10.1038/s41598-024-74135-8 |
| spellingShingle | Yang Yang Tim Weiss Hamed Arianfard Akram Youssry Alberto Peruzzo A fixed phase tunable directional coupler based on coupling tuning Scientific Reports |
| title | A fixed phase tunable directional coupler based on coupling tuning |
| title_full | A fixed phase tunable directional coupler based on coupling tuning |
| title_fullStr | A fixed phase tunable directional coupler based on coupling tuning |
| title_full_unstemmed | A fixed phase tunable directional coupler based on coupling tuning |
| title_short | A fixed phase tunable directional coupler based on coupling tuning |
| title_sort | fixed phase tunable directional coupler based on coupling tuning |
| url | https://doi.org/10.1038/s41598-024-74135-8 |
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