Widely tunable dual acousto-optic interferometric device based on a hollow core fiber
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arXiv
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| Auteurs principaux: | , , , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866916865673003008 |
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| author | da Silva, Ricardo E. Osório, Jonas H. Gérôme, Frédéric Benabid, Fetah Webb, David J. Franco, Marcos A. R. Cordeiro, Cristiano M. B. |
| author_facet | da Silva, Ricardo E. Osório, Jonas H. Gérôme, Frédéric Benabid, Fetah Webb, David J. Franco, Marcos A. R. Cordeiro, Cristiano M. B. |
| contents | An all-fiber dual Mach-Zehnder interferometer (MZI) based on an acoustically modulated hollow-core fiber (HCF) is experimentally demonstrated for the first time. By attaching an acoustic driver in between the fixed ends of an HCF, we fabricated two acousto-optic modulators (AOMs) with distinct driver positions, allowing for synchronizing two in-line MZIs inside the HCF. The first MZI is set by two acoustic long-period gratings separated by a second MZI formed at the fiber and driver attaching region. We show that this setup enables frequency-tuning of the coupling between the fundamental and higher-order modes in the HCF. Additionally, we simulate and analyze the HCF modal couplings and MZIs' modulated spectra under distinct device parameters using the transfer matrix method. The new AOM-MZI enables tuning of the MZIs free spectral range by adjusting 1 Hz of the electrical frequency, which is promising to modulate multiwavelength filters, sensors and fiber lasers. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_09148 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Widely tunable dual acousto-optic interferometric device based on a hollow core fiber da Silva, Ricardo E. Osório, Jonas H. Gérôme, Frédéric Benabid, Fetah Webb, David J. Franco, Marcos A. R. Cordeiro, Cristiano M. B. Optics An all-fiber dual Mach-Zehnder interferometer (MZI) based on an acoustically modulated hollow-core fiber (HCF) is experimentally demonstrated for the first time. By attaching an acoustic driver in between the fixed ends of an HCF, we fabricated two acousto-optic modulators (AOMs) with distinct driver positions, allowing for synchronizing two in-line MZIs inside the HCF. The first MZI is set by two acoustic long-period gratings separated by a second MZI formed at the fiber and driver attaching region. We show that this setup enables frequency-tuning of the coupling between the fundamental and higher-order modes in the HCF. Additionally, we simulate and analyze the HCF modal couplings and MZIs' modulated spectra under distinct device parameters using the transfer matrix method. The new AOM-MZI enables tuning of the MZIs free spectral range by adjusting 1 Hz of the electrical frequency, which is promising to modulate multiwavelength filters, sensors and fiber lasers. |
| title | Widely tunable dual acousto-optic interferometric device based on a hollow core fiber |
| topic | Optics |
| url | https://arxiv.org/abs/2409.09148 |