دورية أكاديمية
Deconvolutional Method Utilizing Power Variable Point Spread Function for Resolution Degradation Mitigation in SBS-Based Optical Spectrum Analyzer
| العنوان: | Deconvolutional Method Utilizing Power Variable Point Spread Function for Resolution Degradation Mitigation in SBS-Based Optical Spectrum Analyzer |
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| المؤلفون: | Zi Liang, Yuming Zhang, Haoyu Wang, Changjian Ke, Deming Liu |
| المصدر: | IEEE Photonics Journal, Vol 16, Iss 1, Pp 1-5 (2024) |
| بيانات النشر: | IEEE, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Applied optics. Photonics LCC:Optics. Light |
| مصطلحات موضوعية: | Deconvolution, power variable PSF, resolution degradation, SBS-based OSA, gain saturation, Applied optics. Photonics, TA1501-1820, Optics. Light, QC350-467 |
| الوصف: | High-resolution optical spectroscopy is a significant approach to reveal the inherent laws of devices and systems. Although optical spectrum analyzer (OSA) based on stimulated Brillouin scattering (SBS) has achieved a resolution of ∼10 pm, when the signal power increases, the Brillouin gain spectrum (BGS) will saturate and cause resolution degradation. In order to solve this problem, we introduce shape factor k to describe the variation of BGS with signal power, and adopt the BGS as the point spread function (PSF). Then the signal is divided into several intervals with equal frequency spacing, where the BGS does not change. On this basis, we perform the Jansson-Van Cittert (JVC) algorithm to complete deconvolution in each interval with power variable PSF. The proposed method is used to test the periodic signal in SBS-OSA. Experimental results show that the proposed method can improve the spectral resolution from 22 MHz to 11 MHz when the frequency interval is 14 MHz and the signal power is −5 dBm. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1943-0655 |
| Relation: | https://ieeexplore.ieee.org/document/10365723/; https://doaj.org/toc/1943-0655 |
| DOI: | 10.1109/JPHOT.2023.3344193 |
| URL الوصول: | https://doaj.org/article/bc205d450e0648c9859c53e4577567d9 |
| رقم الأكسشن: | edsdoj.bc205d450e0648c9859c53e4577567d9 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 19430655 |
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| DOI: | 10.1109/JPHOT.2023.3344193 |