Nonlinear distortion of nonreciprocal transmission in parity-time-symmetric silicon micromechanical resonators
Abstract Parity-time (PT) symmetric resonators have an exact phase with real frequency eigenvalues and a broken phase with complex-conjugate frequency eigenvalues. In the presence of nonlinear gain, the PT-symmetric resonator exhibits nonreciprocal transmission when it is biased at the broken phase,...
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| Format: | Article |
| Language: | English |
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Nature Publishing Group
2025-05-01
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| Series: | Microsystems & Nanoengineering |
| Online Access: | https://doi.org/10.1038/s41378-025-00952-0 |
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| author | Rui Wang Lei Han Man-Na Zhang Li-Feng Wang Qing-An Huang |
| author_facet | Rui Wang Lei Han Man-Na Zhang Li-Feng Wang Qing-An Huang |
| author_sort | Rui Wang |
| collection | DOAJ |
| description | Abstract Parity-time (PT) symmetric resonators have an exact phase with real frequency eigenvalues and a broken phase with complex-conjugate frequency eigenvalues. In the presence of nonlinear gain, the PT-symmetric resonator exhibits nonreciprocal transmission when it is biased at the broken phase, which promises applications for isolators and circulators in modern communication systems. The nonlinear distortion performance is one of the most important metrics in most electronic applications where linearity is critical. This article provides the first experimental results of nonlinear distortion of nonreciprocal transmission in a pair of electrically coupled silicon micromechanical resonators at the broken phase. The results show the 1 dB gain compression point (P1dB) with 5 dBm and the input-referred third-order intercept point (IIP3) with 11.5 dBm. |
| format | Article |
| id | doaj-art-725bcbc8d3fa4eedb69ce03f892c921d |
| institution | Kabale University |
| issn | 2055-7434 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Nature Publishing Group |
| record_format | Article |
| series | Microsystems & Nanoengineering |
| spelling | doaj-art-725bcbc8d3fa4eedb69ce03f892c921d2025-08-20T03:48:18ZengNature Publishing GroupMicrosystems & Nanoengineering2055-74342025-05-011111710.1038/s41378-025-00952-0Nonlinear distortion of nonreciprocal transmission in parity-time-symmetric silicon micromechanical resonatorsRui Wang0Lei Han1Man-Na Zhang2Li-Feng Wang3Qing-An Huang4Key Laboratory of MEMS of the Ministry of Education, Southeast UniversityKey Laboratory of MEMS of the Ministry of Education, Southeast UniversityKey Laboratory of MEMS of the Ministry of Education, Southeast UniversityKey Laboratory of MEMS of the Ministry of Education, Southeast UniversityKey Laboratory of MEMS of the Ministry of Education, Southeast UniversityAbstract Parity-time (PT) symmetric resonators have an exact phase with real frequency eigenvalues and a broken phase with complex-conjugate frequency eigenvalues. In the presence of nonlinear gain, the PT-symmetric resonator exhibits nonreciprocal transmission when it is biased at the broken phase, which promises applications for isolators and circulators in modern communication systems. The nonlinear distortion performance is one of the most important metrics in most electronic applications where linearity is critical. This article provides the first experimental results of nonlinear distortion of nonreciprocal transmission in a pair of electrically coupled silicon micromechanical resonators at the broken phase. The results show the 1 dB gain compression point (P1dB) with 5 dBm and the input-referred third-order intercept point (IIP3) with 11.5 dBm.https://doi.org/10.1038/s41378-025-00952-0 |
| spellingShingle | Rui Wang Lei Han Man-Na Zhang Li-Feng Wang Qing-An Huang Nonlinear distortion of nonreciprocal transmission in parity-time-symmetric silicon micromechanical resonators Microsystems & Nanoengineering |
| title | Nonlinear distortion of nonreciprocal transmission in parity-time-symmetric silicon micromechanical resonators |
| title_full | Nonlinear distortion of nonreciprocal transmission in parity-time-symmetric silicon micromechanical resonators |
| title_fullStr | Nonlinear distortion of nonreciprocal transmission in parity-time-symmetric silicon micromechanical resonators |
| title_full_unstemmed | Nonlinear distortion of nonreciprocal transmission in parity-time-symmetric silicon micromechanical resonators |
| title_short | Nonlinear distortion of nonreciprocal transmission in parity-time-symmetric silicon micromechanical resonators |
| title_sort | nonlinear distortion of nonreciprocal transmission in parity time symmetric silicon micromechanical resonators |
| url | https://doi.org/10.1038/s41378-025-00952-0 |
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